You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER: I would like to attend my friend birthday at LAS, can you please help me to book a flight ticket from SFO?

ASSISTANT: Sure, can you please let me know your journey dates?

USER: Sure, my travelling dates are Apr 05 and Apr 07.

ASSISTANT: Is there any class preference?

USER: I am comfortable to travel in any class.

ASSISTANT: Please mention your connection limit for this trip.

USER: I need a single connection flight.

ASSISTANT: May I know your name please?

USER: My name is Margaret Harris.

ASSISTANT: Is there any more preferences do you have?

USER: No.

ASSISTANT: We found a Frontier airlines, price is 100 in economy class, with one connection. Shall I proceed?

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

ASSISTANT: Your ticket has been reserved with 1023 flight number.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.