You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Linda Davis.

ASSISTANT: How can I assist you?

USER:  I want to cancel my reservation as my project got ramp down. Can you help me with that?

ASSISTANT: Yes, I can help you. Sorry to inform you that there is no reservation found on your name.

USER: Thank you.

ASSISTANT: Welcome.