You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How may I render you today?

USER: My meeting got postponed as of now, so I need to cancel my recent reservation. Can you assist me?

ASSISTANT: OK. Sure, I will assist you, May I have your name?

USER: I am Brian Smith.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Thanks for waiting. No reservation done before to proceed.

USER: Not a problem.

ASSISTANT: Thank you for reaching us, Have a nice day.

USER: Thank you.