You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Wait for some time I will check and get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting there is no reservation found on your name.

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

ASSISTANT: Thanks for approaching us.