You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you now?

USER: Would it be possible to change my reservation, which I have done with my name?

ASSISTANT: Sure, can I have your good name please to check your reservation status?

USER: My name is Nicholas Hall.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry Nicholas Hall, no reservation has found under your name to change.

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

ASSISTANT: Thank you for choosing us.