You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Due to an emergency, I would like to cancel my trip to Dallas. Can you please help me by cancelling the recent reservation?

ASSISTANT: Sure, I am glad to help you. May I know your name for further proceedings?

USER: My previous reservation has done with my name Christine Williams.

ASSISTANT: Please hold on for a while, let me check your ticket status in our website.

USER: Sure, take your own time.

ASSISTANT: Sorry Williams, no reservation is found by your name.

USER: Ok, not an issue. May be something went wrong while booking the ticket.

ASSISTANT: Thank you for contacting us.

USER: Thank you for providing information.