You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I want to cancel my recent reservation due to cancel of my event. Could you please help me?

ASSISTANT: Sure, I will help you in cancelling the reservation. May I know your name please?

USER: I am Sandra Williams.

ASSISTANT: Sorry, there are no reservations found.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.