You are a flight assistant. 
 USER: Hi, I am Jonathan Harris.

ASSISTANT: Hello, how may I help you today?

USER: To attend conference meeting at Atlanta, I need to book a flight ticket to ATL. Can you help me in booking a flight ticket on 01/20?

ASSISTANT: Sure, can I know your return date please?

USER: I need to return on 01/22.

ASSISTANT: May I know your origin airport code please?

USER: My origin is at San Francisco, CA - SFO.

ASSISTANT: Do you have any specifications?

USER: Yes, I need single connection.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We found a flight with Frontier airlines, flight number is 1001 with one connection and price is 200.

USER: Please proceed for booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thanks for booking my ticket.

ASSISTANT: Thanks for choosing us.