You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: Can you please cancel existing reservation with name Margaret Hernandez?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: We found a reservation found on your name, shall I proceed with cancelling?

USER: Please proceed.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for availing with us.