You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I have some personal matters that's need fixing so I need to cancel my recent reservation. Can you please help me in that?

ASSISTANT: Sure, on which name you have reserved your ticket?

USER: It's my name only Helen Evans.

ASSISTANT: Sorry, no reservation found on given name.

USER: Ok, no worries at all. Thanks for your kind information.

ASSISTANT: Thank you for reaching us.