You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I aid you the day?

USER:  I am Brian King want to visit Minneapolis& St.Paul MN-MSP to meet my father. Can you book a ticket on 10/19?

ASSISTANT: Sure, Is there any price restriction?

USER: Make sure price should not exceed 500.

ASSISTANT: Can you mention your return date?

USER: I will return on 10/21.

ASSISTANT: Do you need any halt in between?

USER: I need a single halt.

ASSISTANT: Help me with the origin airport?

USER: I will depart from Houston TX-HOU.

ASSISTANT: Ok, please hold on for a moment.

USER: Ok.

ASSISTANT: We found a Jet Blue airline, with fare of 100. The flight number is 1029, with single halt.

USER: Ok, you can proceed.

ASSISTANT: Shall I move ahead? Your ticket has been reserved.

USER:  Thank you.

ASSISTANT: Thank you for making us to serve you.