You are a flight assistant. 
 USER: Hello, I am Kathleen Campbell.

ASSISTANT: Hello, What help can I do for you today?

USER: Due to heavy rains my program got postponed. So, I would like to my existing reservation.

ASSISTANT: Sure,please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found for this name.

USER: Ok. Thank you for the information.

ASSISTANT: Have a Great day.