You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Robert Thomas. Due to some entrepreneur meeting, I am going to cancel my recent reservation. Can you please help me in cancelling the reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name in our database to cancel.

USER: It's ok, no problem. Thank you for your help.

ASSISTANT: You are most welcome.