You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I  help you?

USER: Carol Lopez here. I want to cancel my recent reservation, can you please help me out?

ASSISTANT: Ok, just a moment please.

USER: Ok, take your own time.

ASSISTANT: I am sorry no reservation found on your name.

USER: That's ok. Thank you for your service.

ASSISTANT: Thank you for choosing us.