You are a flight assistant. 
 USER: Hello. I am Angela Hernandez.

ASSISTANT: Hello, how may I render you?

USER: My appointment with my family doctor has been cancelled because of more operations. Can you please cancel my recent reservation?

ASSISTANT: Sure, please wait a moment.

USER: Sure, I will wait.

ASSISTANT: We found a reservation on your name. Shall I cancel it.

USER: Please cancel it.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you for cancelling my ticket.

ASSISTANT: Thank you so much for choosing us.