You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Donald White.

ASSISTANT: How may I aid you?

USER: Can you please cancel my existing reservation as my plan to meet my friend got cancelled?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there are no reservation found on your name.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for opting us.