You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Owing to an emergency, I would like to cancel my recent reservation. Will you help me with this?

ASSISTANT: Sure, may I know your name please?

USER: My name is Margaret Roberts.

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

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for choosing us.