You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Angela Martinez.

ASSISTANT: Yes.

USER: Due to emergency health issue I want to cancel my tickets.

ASSISTANT: Sure.

USER: Can you please help me with cancelling my reservation?

ASSISTANT: We found your reservation, shall I proceed the cancellation of your ticket?

USER: Yes, please.

ASSISTANT: Your reservation has been canceled successfully.

USER: Ok.

ASSISTANT: Thank you and have a nice day.

USER: Thank you for helping me.