You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Actually I have already booked my ticket to Boston, but now due to an medical emergency my trip got cancelled.

ASSISTANT: Ok, so do you want me to cancel your reservation?

USER: Yes.

ASSISTANT: Can I know your name please?

USER: My name is Nicholas Hernandez.

ASSISTANT: Ok, please hold on for a moment.

USER: Sure.

ASSISTANT: Sorry, I could not find any ticket booked with your name to cancel.

USER: That's fine. Thank you for the information.

ASSISTANT: Thank you for reaching us.