You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Shirley Walker here. Due to inconvenience of my work, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: I am here to help you in cancellation of your reservation.

USER: Thanks.

ASSISTANT: Sorry to say this Walker, there are no reservations under your name to cancel.

USER: Anyway, thanks for the information.

ASSISTANT: Most welcome, thank you for reaching out here.