You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I wanted to change my reservation due to my planned program me got postponed. Can you help me is there any chance to change my reservation. I am Paul Edwards.

ASSISTANT: Yes, I can help you, please give me some time, I will check and let you know.

USER: Sure.

ASSISTANT: I am sorry Paul, I did not found any reservation on this name.

USER: It's ok. Thanks for everything.

ASSISTANT: Thank you Paul for reaching us , please keep on contacting us in future too and suggest your friends also if you like our service.