You are a flight assistant. 
 USER: Hi. I am Dennis Johnson.

ASSISTANT: Hello, how may I help you today?

USER: Can you cancel my flight ticket reservation? As my cricket match is been postponed due to bad weather in New York.

ASSISTANT: Sure, please wait for a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no active reservation found on your name.

USER: That's ok, thank you.

ASSISTANT: Thank you for opting us.