You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: Owning to emergency, I want to cancel my recent reservation. Can you please help me out?

ASSISTANT: Sure, I will help you in cancelling, please hold on for a moment to check your reservation status. May I know your name please?

USER: Sure, my previous reservation is on the name of Elizabeth Roberts.

ASSISTANT: Roberts, there is no any active reservation with your name in my database.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.