You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your good name please?

USER: My name is Gregory Hill.

ASSISTANT: How can I help you?

USER: I booked a flight ticket two days ago, due to sudden change in my plan I want to cancel my ticket.

ASSISTANT: Ok, please wait a moment. I will check the status and update the information and let you know back.

USER: Sure.

ASSISTANT: Thanks for waiting. No reservation found with your name to cancel the reservation.

USER: Thank you for your information.

ASSISTANT: Thanks for contacting us. Have a good day.