You are a flight assistant. 
 USER: Hello. My name is Jack Hernandez.

ASSISTANT: Hello Jack. How can I guide you?

USER: Actually, I booked a ticket NYC to attend a carnival, but due to a medical emergency, I want to cancel the trip.

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

USER: Yes, can you help me out.

ASSISTANT: Yes, please hold on for a moment and I will check the status of your existing reservation.

USER: Sure, take your time.

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

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

ASSISTANT: Thank you, have a great day.