You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Samuel Mitchell here. I need to cancel my recent reservation because my brother marriage was postponed, can you help me?

ASSISTANT: Sure, we will help with that.

USER: Thank you.

ASSISTANT: Please wait for a moment.

USER: Ok, take your own time.

ASSISTANT: Thank you for waiting, there is no recent reservation found on your name.

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

ASSISTANT: Thank you.