You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: Owing to a emergency my boarding meeting was cancelled. I want to cancel my recent reservation. Will you be my helping hand in cancelling my ticket?

ASSISTANT: Sure, may I know your name please?

USER: The ticket was reserved with my name Helen Martin.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry, no reservation found with your name.

USER: Ok, no problem. Thank you for your service.

ASSISTANT: Thanks for choosing us.