You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

USER: This is Barbara Williams.

ASSISTANT: Ok.

USER: I want to cancel my reservation because my health is not good. Can you please help me with this?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for some time.

USER: Take your own time.

ASSISTANT: Thanks for your precious time. There is no reservation found on your name.

USER: That's fine. Thank you for giving information.

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