You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you aid me to book my ticket from SFO to LAS?

ASSISTANT: Sure, can you provide me with the travel dates?

USER: My travel dates are Dec 22 and Dec 24 respectively.

ASSISTANT: Is there any class preference?

USER: My preferences is for single connecting flight.

ASSISTANT: Do you have any connection limit? Are there any more preferences that you want to avail?

USER: I have mentioned above, my class preferences is economy.

ASSISTANT: May I know your name please?

USER: Richard Green here.

ASSISTANT: Give me a moment.

USER: Take your time.

ASSISTANT: American Airlines with flight 1003 is providing service on your route with connecting flight and the cost is 100.

USER: Please proceed for booking.

ASSISTANT: Your ticket is booked where departure SFO 3:00 hours Dec 22 and arrival LAS 0:00 hours Dec 24.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.