You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I assist you today?

USER: I am Sarah Brown. I made a earlier reservation to attend a seminar, due to some problems it got cancelled. Can you please cancel my reservation?

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Sure.

ASSISTANT: Sarah, there is no reservation found under your name.

USER: Ok, no issue. Than you for your information.

ASSISTANT: Thank you for contacting us.