You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I need to cancel my reservation due to my planned trip got cancelled. So please help me with cancelling my flight ticket?

ASSISTANT: Sure, please mention the name for checking the reservation.

USER: Thank you and my name is Gregory Lee.

ASSISTANT: Please give me a moment.

USER: Sure, take your own time.

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

USER: I think the ticket booking is not properly done last time. Anyways thank you for checking.

ASSISTANT: Welcome, have a great day.