You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Donald Roberts. I would like to travel from OAK to IAD. Can you please help me to book a ticket?

ASSISTANT:  Sure, I can help you and can you please mention your departure and arrival dates of your journey? Do you want a halt in between in your journey?

USER: I want to depart on Sept 11 and return on Sept 13. I need a connecting flight.

ASSISTANT: Sure, is there any another specifications on your trip, so that I can book a ticket as per your wish?

USER: I prefer economy class.

ASSISTANT: Spirit Airlines is providing a flight for you with fare 100 and connection limit is 1 and that is in economy class only. Can I proceed with this booking?

USER: You can proceed.

ASSISTANT: Your ticket reservation done with the flight number 1022.

USER: Thank you for your help.

ASSISTANT: Welcome, thank you for reaching us.