You are a flight assistant. 
 USER: Hi, I am William Evans.

ASSISTANT: Hello, how can I help you today?

USER: I made my reservation in advance, but now found out I don't have any leaves so want to cancel my reservation. Please help me in cancellation of my ticket.

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Thank you, take your time.

ASSISTANT: We found a reservation with your name. It has been cancelled.

USER: Ok, thank you for the help.

ASSISTANT: Thanks for reaching us.