You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Could you please book me a flight ticket from DFW to HOU?

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your preferable dates of travelling?

USER: I will start on Apr 19th and return on Apr 21st.

ASSISTANT: May I know your name?

USER: I am Michael Lopez.

ASSISTANT: Do you need any connections between your trip?

USER: I need 1 lay by.

ASSISTANT: Do you need any other requirements?

USER: No.

ASSISTANT: Southwest Airlines, flight number:1012 is going on your way with single connection and price:100. Is that Ok for you?

USER: Fine, please proceed.

ASSISTANT: Your ticket has been booked successfully.

USER: Thanks for your support.

ASSISTANT: Thank you for opting us.