You are a flight assistant. 
 USER: Hello. I'm Michelle Harris.

ASSISTANT: Hello Harris, do you want any help from me?

USER: My business meeting has been cancelled. So, I would like to cancel my reservation. Can you please help me with that?

ASSISTANT: Ok, just hold on, I will check it once.

USER: Sure.

ASSISTANT: Sorry Harris, in my database I didn't found any details regarding your reservation.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: It's my pleasure. Have a nice day.

USER: Thank you.