You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you?

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

ASSISTANT: I will help you with that.

USER: Thank you.

ASSISTANT: Please share your name to proceed for booking.

USER: I am David Harris.

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

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.

USER: Thanks for the information.