You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to cancel my reservation as my research got ramp down.

ASSISTANT: Sure, let me know your good name please.

USER: I am Rebecca Thomas.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for your time. Unfortunately we found no reservation by your name.

USER: Its Ok. Thanks for your assistance.

ASSISTANT: Thank you for opting us.