You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you?

USER: I am Michelle Green. Actually I want to cancel my recent reservation due to my dates problem. Can you help me out?

ASSISTANT: Yes, sure. Sorry Michelle Green there is no reservation under your name.

USER: Please check. Oh! that's fine for me.

ASSISTANT: Thank you for such a positive attitude.

USER: Thank you for your help.

ASSISTANT: It's my pleasure. Have a great day a head.