You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Elizabeth Hill.

ASSISTANT: Elizabeth, how may I assist you?

USER: Actually, I booked a ticket to NYC, but due to a medical emergency, I am unable to attend.

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

USER: Yes, can you help me out?

ASSISTANT: Sure, I will help you in cancelling your reservation. Elizabeth, please hold on for a moment while I check the status of your existing reservation.

USER: Sure, take your time.

ASSISTANT: Sorry, I could not find any reservation done on your name.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you, have a good day.