You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

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

ASSISTANT: Sure, we are happy to help you. Please wait for a while.

USER: Thank you. Ok, take your time.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

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

ASSISTANT: Thank you for opting us.