You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER:  I want to cancel my recent reservation due to sudden cancellation of my trip. Can you help me?

ASSISTANT: Sure, may I know your good name?

USER: Cynthia Lee here.

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

USER: No issue, thanks for the information.

ASSISTANT: Thank you for choosing us.