You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Stephanie Martin. I want to visit Houston, can you please help me to book my flight ticket from JFK to HOU?

ASSISTANT: Sure, can you please share your journey dates?

USER: I would like to depart on Dec 19th and I will return back in the morning on Dec 21st.

ASSISTANT: Do you have any specifications?

USER: I prefer for a single connection flight.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Ok, we found direct flight 1002 in Southwest Airlines which return in the morning 5 AM  with fare of 200. Shall I proceed?

USER: Yes, please book the ticket.

ASSISTANT: Your flight ticket has been confirmed in economy class.

USER: Thank you very much.

ASSISTANT: Thank you for reaching us.