You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Patricia Adams. Can you help me in cancelling my recent reservation, as my exam is postponed?

ASSISTANT: Sure, give me a minute.

USER: Ok.

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

USER: That's ok, thank you.

ASSISTANT: Thank you for opting us.