You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I want to cancel my reservation, can you help me with that?

ASSISTANT: Sure, may I know your name?

USER: Deborah Lee here.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no active reservations to cancel.

USER: Ok, thank you.

ASSISTANT: Thank you for reaching our service.