You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I  help you?

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure, may I know your name please?

USER: My name is Mark Davis.

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

USER: No issues.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.