You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you today?

USER:  I am Elizabeth Lewis want to cancel my reservation owing an emergence. Can you help me in cancelling?

ASSISTANT: Sure, I will help you with that. Please wait a moment.

USER: Ok.

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

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for choosing us.