You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: I would like to cancel my reservation as I am leaving for delegates, can you please help me out?

ASSISTANT: I am here to help you about that, can you please let me know your name for checking the reservation status?

USER: Karen Nelson here.

ASSISTANT: Sorry to say this Karen Nelson, there is no active reservation under your name in our booking list.

USER: Ok no problem, thank you for your services.

ASSISTANT: You are welcome, thank you for reaching us.