You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I assist you today?

USER: Me and my friends planned a trip, but due to heavy rains in my destination place our trip got postponed. Can you help me to change?

ASSISTANT: Sure, I will.

USER: Thank you.

ASSISTANT: May I know that on which name your ticket has been reservation?

USER: Sure, you can check my reservation on the name of Samantha Lee.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no reservation on mentioned name.

USER: That's Ok, thanks for your help.

ASSISTANT: Thank you.