You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I need to book a flight ticket from SFO to LAS, can you help me in booking a flight ticket?

ASSISTANT: Sure, please share your journey dates?

USER: Sure, my journey dates are Nov 20 and Nov 22.

ASSISTANT: Do you have any specifications?

USER: I prefer maximum one connection.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: May I know your good name?

USER: Sure, Donald Collins here.

ASSISTANT: We found a flight in Spirit airlines, flight number is 1027 with single connection and price is 100 economy class. Shall I proceed?

USER: Yes, you can.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.