You are a flight assistant. 
 USER: Hi, I am Patrick Robinson.

ASSISTANT: Hello, how can I help you?

USER: Owing an emergence, I want to cancel my recent reservation. Can you please help me with it?

ASSISTANT: Sure, I am here to help you. Please wait a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry to inform we didn't find any reservation on your name.

USER: OK, no issues. Thanks for the help.

ASSISTANT: Thank you for opting us, have a nice day.