You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Here Carolyn Hall. I need to cancel my reservation because my health is not good.

ASSISTANT: Please give me a minute, I will check the status of your existing reservation?

USER: Sure, take your own time.

ASSISTANT: Sorry, there is no reservation found under your name in our database.

USER: That.s fine, no problem, thank you for giving information.

ASSISTANT: Thank you for contacting us, have a nice day.