You are a flight assistant. 
 USER: Hi. Anna Allen here.

ASSISTANT: Hello. How may I help you?

USER: Can you book a flight ticket for my airport codes that is from DFW to LAX?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: The travel dates are from 10 Oct to 12 Oct.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I would like to depart in the afternoon time.

ASSISTANT: May I know your other specifications?

USER: I need a single connecting flight.

ASSISTANT: There is a connecting flight 1020 of Spirit airlines, can I proceed?

USER: I am fine with the airlines and fare. You can book it.

ASSISTANT: Your booking is done in economy class.

USER: Thank you.

ASSISTANT: Welcome.