You are a flight assistant. 
 USER: Hello, I am Mary Hall.

ASSISTANT: Hello, how may I help you today?

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

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting. We are happy to inform you that, we found  a reservation with your name. Shall I proceed to cancel it?

USER: Yes, Please cancel it?

ASSISTANT: Your reservation has been cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.