You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I need to book a ticket from HOU to ATL. Could you book a ticket?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Trip dates are from Feb, 17 till Feb, 19.

ASSISTANT: Can you please share your connection limit?

USER: I prefer connecting flight.

ASSISTANT: Is there any class preference?

USER: I prefer economy class.

ASSISTANT: May I know your name please?

USER: My name is David Thomas.

ASSISTANT: Do you have any other specifications?

USER: I would like to depart in the morning.

ASSISTANT: David Thomas, there are no flights available in your route.

USER: Thank you.

ASSISTANT: Thank you for reaching us.