You are a flight assistant. 
 USER: Hi, I am Robert Thomas.

ASSISTANT: Hello, how can I serve you?

USER: My trip to Austin has been cancelled due to an emergency meeting. Can you please cancel my reservation?

ASSISTANT: Sure, please wait for a moment, while I check with your reservation.

USER: Ok.

ASSISTANT: Thanks for waiting, sorry to inform you there is no any reservation found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you, have a nice day.