You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: I am Helen Garcia.

ASSISTANT: Your reservation is found and I cancelled it successfully.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.