You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I am Nicholas Phillips. I would like to change my recent reservation, can you help me with this?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: We hardly tried to find your reservation but, no reservation has been found with your name.

USER: That's fine, thanks for your information.

ASSISTANT: Your welcome.