You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am George Wilson. I am planning to change my reservation to another destination, so can you help me to change my reservation?

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for opting us.