You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you please book my flight ticket from CLT to HOU?

ASSISTANT: Ok, please can I know the name to book?

USER: I am Charles Allen.

ASSISTANT: Ok, please can I know the dates of the journey?

USER: I will depart on Sept 18th and return back on Sept 20th.

ASSISTANT: Ok, please can I know the intents? Ok, please wait a moment.

USER: I only prefer for a single connection flight.

ASSISTANT: There is a flight ticket available for the airfare 300 and the airlines is Spirit. The flight is 1004, can I book?

USER: Great! Please book the ticket for me.

ASSISTANT: Ok, the flight ticket is booked and the class is economy.