You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you for the day?

USER: Could you help me in booking a flight ticket from HOU to SEA?

ASSISTANT: Sure, I am here to help you with that. Can you please share your preferable travel dates?

USER: I want to fly on Mar 18, return on Mar 20.

ASSISTANT: May I know your name please?

USER: My name is Steven Lee.

ASSISTANT: Do you prefer either economy or business class?

USER: I want economy class flight ticket.

ASSISTANT: May I know your connection limit?

USER: I want a flight with one connection.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry to tell you that, there are no flights available on this route as per your details.

USER: Not an issue, thank you.

ASSISTANT: Thank you for reaching us, have a great day.