You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I be at your service?

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

ASSISTANT: Sure, may I know your name to verify in our data base?

USER: My name is Ronald Nelson.

ASSISTANT:  I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Thanks.

ASSISTANT: Thank you for approaching us.