You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Stephen Walker. I need to book a ticket with a halt from Houston to Orlando to meet my children. Could you please help me in doing that?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: My airport codes are IAH and MCO.

ASSISTANT: Could you please share your planned travel dates?

USER: My travelling dates are 02/22 and return on 02/24.

ASSISTANT: We found a Delta airline, flight number: 1003, price: 100.

USER: Ok, you can proceed with booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.