You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Owing to an emergency I had to request for this change reservation.

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

USER: My name is Thomas Jackson.

ASSISTANT: Please wait for few minutes.

USER: Sure.

ASSISTANT: There is no existing reservation found on your name.

USER: Ok, no issues.

ASSISTANT: Thank you for opting us for the cancellation your ticket.

USER: Thanks for your information.