You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I have a trip plan, but unfortunately there is a heavy rain fall, due to that reason I want to cancel my reservation, can you help me?

ASSISTANT: Sure, I will help you with that. Can I have your name please?

USER: My name is Kevin Williams.

ASSISTANT: Kevin, please wait a moment.

USER: Ok.

ASSISTANT: Sorry Kevin, I did not found any reservation showing active in our database.

USER: Oh it's ok, it may be cancelled by my colleagues already. Thank you for giving information.

ASSISTANT: You are most welcome. Thank you for reaching Global Booking Agency.Have a nice day.