You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to book a flight ticket from HOU to DTW. Could you help me in booking?

ASSISTANT: Sure, can I know the travel dates please?

USER: My travelling dates are from Dec 26-28.

ASSISTANT: May I know your name please?

USER: Angela Hernandez here.

ASSISTANT: Can I know the connection limit please?

USER: I need 1 connecting flight.

ASSISTANT: Do you have any requirements?

USER: I prefer for normal-cost airline and I need economy class.

ASSISTANT: Ok, wait a moment please.

USER: Ok.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us.