You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you today?

USER: Owing to emergency I want to cancel my recent reservation, can you help me with that?

ASSISTANT: Sure, I'll help you with this.

USER: Thank you.

ASSISTANT: Please let me know your name to check the reservation status.

USER: My name is Susan Thomas.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a reservation by this name. Shall I cancel the ticket?

USER: Please cancel.

ASSISTANT: Your ticket has been cancelled successfully.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.