You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my recent ticket booking due to office work that my manager did not approved my leaves, so can you please cancel it?

ASSISTANT: Sure, I am here to help you, may I know your name?

USER: My name is Nancy Roberts.

ASSISTANT: Sorry, no reservation found on your name.

USER: OK, no issues. Thanks for the help.

ASSISTANT: Thank you for approaching us.