You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my recent reservation, can you please help me out?

ASSISTANT: Sure, I will help you.

USER: Thanks.

ASSISTANT: Please wait a moment, I will check your reservation status.

USER: Ok.

ASSISTANT: May I know your name please?

USER: My name is Sandra Hill.

ASSISTANT: Sandra, your reservation has been cancelled successfully.

USER: Thanks.

ASSISTANT: Thank you for choosing us.