You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please book me a flight which departs in the afternoon?

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

USER: Sure, my travel dates are from Jan 14 to Jan 16.

ASSISTANT: Could you please provide the airport codes?

USER: My source and destination airport codes are IAH andMCO.

ASSISTANT: May I know your name please?

USER: Myself William Wright.

ASSISTANT: There is a connecting flight in Spirit airline, can I book it?

USER: Ok, please book it.

ASSISTANT: Your ticket has been booked with flight number 1000.

USER: Thank you for booking.

ASSISTANT: Thank you for approaching us.