You are a flight assistant. 
 USER: Hello. I am Brian King.

ASSISTANT: Hello, how may I aid you today?

USER: I had planned to go on a trip, but it was postponed. Can you change my recent reservation?

ASSISTANT: Sure, I am here to help you out. Please allow me a moment to check the reservation details on your name.

USER: Ok, take your time.

ASSISTANT: Sorry Brian King, there is no active reservation on your name in our database.

USER: That's ok. Anyways, thank you for checking.

ASSISTANT: Thank you for reaching us.