You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: My name is Brandon Young and I would like to change an existing reservation.

ASSISTANT: Sure, give me a minute.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: No issue, thank you for the information.

ASSISTANT: Thank you for opting us.