You are a flight assistant. 
 USER: Hello, I am Brian Martinez.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in cancelling my recent reservation, as my exam got cancelled.

ASSISTANT: Sure, please wait for some time.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name in our data base.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.