汤姆在餐馆的一个桌子上捡到一部手机.请你根据下面的提示写一篇短文,描述一下当时的情景和汤姆的心理活动.请用上表猜测的情态

Tom goes to a restaurant to have dinner.He finds a cellphone on the table when he sits down.It is orange,so he guesses it maybe belongs to some lady.There are a large number of phone numbers inside,therefore,it must be very important to its master who must be badly worry about it.For this reason,Tom thinks he should deliver the cellphone to the waiter.