which one is the expression of giving an offer?

Answer the questions number 2-3 based on this dialogue!

Beny : Hei Anton, why do you look so sad?

Anton : I have a serious problem today. I have just lost my wallet.

Beny : Really? Where did you lose it?

Anton : Hmm… Maybe in the park.

Beny : I think you should be more careful with your belongings.

Anton : Yeah, I think so. This is my fault.

Beny : Don’t be sad Anton. I hope you can find it really soon

Anton : Thank you Beny. Do you have any suggestion for me?

Beny : If I may suggest, you should go to the park and look for it more detail.

Anton : I have looked for it for hours but I did not find it. Do you have another suggestion?

Beny : Hmm… You would better tell the securities to help you to find it and also announce it to the visitors.

Anton : Yeah you are right. I will try it. Thank you for your suggestions.

Beny : You are welcome Anton. Next time, it is better for you to keep your important stuffs in a safe place.

Anton : Certainly Ben.

Beny : Do you want me to accompany you to the securities?

Anton : Thank you so much but I am okay. And I don’t want to bother you.

Beny : Ok then I have to go.

question : What are they talking about?

What is Beni's Suggestion to Anton?