You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Owing to an emergency, I decided to cancel my recent reservation. Could you help me in this?

ASSISTANT: Sure, I am always here to help you. Can you please provide your name?

USER: I reserved a seat with name Barbara Collins.

ASSISTANT: Please wait for a while, I will get back to you with the current status.

USER: Sure.

ASSISTANT: Thanks for your patience, no reservation is existed previously in the database to cancel your ticket.

USER: Ok, thanks for the quick response.

ASSISTANT: Thank you for reaching us, have a good day.