You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

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

ASSISTANT: Please give me a moment.

USER: Ok, take your time.

ASSISTANT: We did not find any reservation on your given name.

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

ASSISTANT: Thank you.