You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Here Karen Scott.

ASSISTANT: How may I help you today Scott?

USER: I want to cancel my reservation due to my health is not good.

ASSISTANT: Sure, can you please wait a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry Karen Scott, there are no active reservations on your name in our database.

USER: That's ok, thank you for giving information.

ASSISTANT: Thank you for opting our service.