You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I would like to change my reservation as I am leaving for hometown, can you please help me out?

ASSISTANT: Sure, may I know your name?

USER: Mark Edwards here.

ASSISTANT: Give me a minute for checking.

USER: Sure.

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

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for opting us.