You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Can you please cancel my recent reservation? As my planned trip has been cancelled.

ASSISTANT: May I know your name?

USER: Sure, my name is William Carter.

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

USER: That's fine, thank you for checking.

ASSISTANT: Thank you.