You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Actually, my planning for a trip is at Denver but I want to change my reservation because of heavy floods, can you please help me in this intent?

ASSISTANT: Sure, I will help you out.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Sure, my name is Rachel Robinson.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Sure. Sorry, there are no reservations found on this name.

USER: That's ok, I will try with the another booking agency.

ASSISTANT: Thank you for reaching us.