You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Janet Allen.

ASSISTANT: How exactly I can serve you the best today?

USER: Due to my health problem I want to cancel my reservation, can you please help me that?

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thanks for waiting. We did not find any reservation on your name to cancel.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us, have a pleasant day.