You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you now?

USER: I would like to cancel my recent reservation because my trip are got postponed, can you help me?

ASSISTANT: Sure, I will help you. May I know your name to check with your previous reservation?

USER: I am Pamela Johnson.

ASSISTANT: Ok, please be on hold for a moment.

USER: Sure.

ASSISTANT: Pamela Johnson, I am very apologetic to inform you this news, but there is no active reservation found by your name in our agency database.

USER: Not an Issue, thank you for the information.

ASSISTANT: Thank you for choosing us. Have a nice day.