You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I am Sharon Adams, want to cancel my recent reservation due to some emergency. Please help me out with that.

ASSISTANT: Sure, please wait.

USER: Ok.

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

USER: It's ok, thank you for your help.

ASSISTANT: Thank you.