You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for 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 please help me to change my existing reservation?

ASSISTANT: Sure, may I know your good name for further process?

USER: Sure, my name is Kimberly Gonzalez.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: There is no existing reservation found on your name in our records.

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

ASSISTANT: Thank you for reaching us.