You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I booked a flight ticket yesterday but it is booked with wrong data, now I want to cancel my ticket. Can you help me with cancellation?

ASSISTANT: Sure, may I know your name?

USER: My name is Emily Harris.

ASSISTANT: Please wait for a while, I will check nad revert you.

USER: Sure.

ASSISTANT: We found a reservation on your name. Shall I proceed with cancelling?

USER: Sure, please cancel this ticket later on I will book the new ticket.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.