You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I best oblige you today?

USER: I made a reservation earlier to attend for a meeting, but it has been postponed. Can you please change my reservation?

ASSISTANT: Sure, I am here to aid you. Can I have your name to track the details?

USER: Sure, I am Janet Wilson.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation was found on your name.

USER: Ok, Thank you for your help.

ASSISTANT: Thank you for choosing us.