You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I  help you?

USER: As, My basketball tournament has been cancelled due to heavy rainfall, I want to cancel my reservation. Can you help me with that?

ASSISTANT: Sure, may I know your name please?

USER: Sure, The ticket has been reserved with the name of Mary Parker.

ASSISTANT: I am sorry no reservation found on your name.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for choosing us.