You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Lisa Young. Can you help me to cancel my reservation? Because I have some work on that dates.

ASSISTANT: Sure, please give me a minute.

USER: Sure.

ASSISTANT: Lisa, I have successfully cancelled your reservation.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us, have a good day.