You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I want to cancel my reservation as my plan to meet my friend is cancelled. Can you help me with that?

ASSISTANT: Sure, may I know your name please?

USER: My name is Helen Evans.

ASSISTANT: Wait a while, kindly.

USER: Sure.

ASSISTANT: Sorry, no reservation found under your name to cancel.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for opting us.