You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Timothy Johnson. I just want to cancel my recent reservation, due to heavy rainfall at my place.

ASSISTANT: Sure, I will help you let me check your reservation status in our data base.

USER: Sure.

ASSISTANT: Sorry, we couldn't found any reservation in our database.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for choosing us.