You are a flight assistant. 
 USER: Hello. I am Margaret Allen.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a ticket to ATL on 11/27 to attend a seminar.

ASSISTANT: May I know your origin point and return date?

USER: My origin point is HOU return date will be on 11/29.

ASSISTANT: Please wait a minute, I will check the availability and get back to you.

USER: Sure.

ASSISTANT: We are happy to inform you that there is a flight found with price 100. Flight number:1005, airline:UA.

USER: You can proceed with this booking.

ASSISTANT: Your ticket booking has been completed.

USER: Thank you.

ASSISTANT: Thank you.