You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Let me know your name to check your reservation?

USER: I am Robert Adams.

ASSISTANT:  have checked in reservation list to change your ticket, but could not find any reservation with your name.

USER: No problem, thanks for the information.

ASSISTANT: Thank you for choosing us.