You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Can you help me in cancelling my recent reservation, as my exam is postponed?

ASSISTANT: Sure, may I know your good name?

USER: Check under the name Jonathan Green.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We found a reservation on your name and it has been cancelled successfully.

USER: Thank you.

ASSISTANT: Thank you for choosing us.