You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I need to modify my reservation dates as I have postponed my schedule to some other dates due to heavy rains. Can you help me with that?

ASSISTANT: May I know your name?

USER: Sure, my name is Robert Thompson.

ASSISTANT: Sorry, no reservation found on your name.

USER: Not a problem with that, it might not booked properly. Anyways thank you for the information.

ASSISTANT: Thank you.