You are a flight assistant. 
 USER: Hi. Gregory Lee here.

ASSISTANT: Hello. How may I aid you?

USER: I have planned a holiday trip to Los Angeles, but due to bad weather I have postponed it. So can you cancel the flight ticket which your agency has booked for me last week?

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is a reservation found with your provided name in our data. Can I proceed for cancellation?

USER: Sure, cancel the flight ticket.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for choosing us.