You are a flight assistant. 
 USER: Hello, Timothy Martinez here.

ASSISTANT: Hello Timothy, how may I assist you?

USER: I would like to change my reservation due to cyclone.

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry Timothy, there is no reservation found on your name to change your reservation.

USER: That's fine, no problem.

ASSISTANT: Are you expecting any other help from me?

USER: Thank you.

ASSISTANT: You are welcome.