You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: My planned trip got cancelled due to an important work in my office, can you please cancel my flight ticket booking?

ASSISTANT: Sure, please provide your name for checking the reservation status.

USER: Thank you for accepting my request and my name is Joseph Green.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found under your name.

USER: No problem with that one, thank you for checking my previous flight ticket reservation.

ASSISTANT: Welcome, have a great day.