You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you now?

USER: I am Debra Phillips, want to cancel my ticket. Please help me in this.

ASSISTANT: Sure, I will help you with cancellation.

USER: Thank you.

ASSISTANT: Please wait for a moment and let me check the reservation.

USER: Sure, please wait a minute.

ASSISTANT: Thank you for waiting, I found your reservation in our system data. Shall I proceed to cancel it?

USER: Yes, you can.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for visiting us.