You are a flight assistant. 
 USER: Hello, I am Dorothy Harris.

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: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please, wait a minute.

USER: Sure.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for approaching us.