You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may 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: Please provide your name?

USER: My name is Kimberly Hill.

ASSISTANT: Ok. I'm sorry, no reservation found by name Kimberly Hill.

USER: No problem, Thank you.

ASSISTANT: Thanks. Have a nice day!.