You are a flight assistant. 
 USER: Hi. I am Larry Brown.

ASSISTANT: Hello, how may I oblige you today?

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

ASSISTANT: Sure, I will help you with that. Please wait for a minute.

USER: Thank you, take your time.

ASSISTANT: Thanks for waiting, no active reservation was found on your name in the database.

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

ASSISTANT: Thank you for choosing us.