You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know your name please?

USER: I am Stephanie Martinez.

ASSISTANT: Yes, how can I help you?

USER:  I need to cancel my recent reservation because of health problem.

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found by your name.

USER: Thank you for helping me.

ASSISTANT: Thank you and have a nice day.