You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please book the ticket from DFW to SFO? As I'm planning to visit San Francisco.

ASSISTANT: Sure, we are here to assist you. When did you scheduled to travel?

USER: I would like to depart from my source location on 18th Jan and I want to return back by 20th Jan.

ASSISTANT: Would you like to travel in direct flight or connecting flight?

USER: I prefer single connected flight.

ASSISTANT: At what time, would you like to depart and arrive?

USER: I don't have time concerns.

ASSISTANT: Do you have any other preferences?

USER: No, I don't have any other specifications.

ASSISTANT: We found a connecting flight with fare of 100 and 1020 flight number. Shall I proceed?

USER: That's fine for me, you can proceed for booking.

ASSISTANT: To confirm the booking, may I know your name please?

USER: My name is Dennis Scott.

ASSISTANT: Your seat has been reserved with Spirit airlines in economy class.

USER: Thank you so much for your help.

ASSISTANT: Thank you for approaching us.