You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you aid me in booking a ticket from IAD to OAK?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: I am planning to start on June 12th and return back on June June 14th.

ASSISTANT: Ok, do you have any other specifications?

USER: I prefer to travel in business class.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Make sure that connection limit is 1.

ASSISTANT: I found a flight for you with Frontier Airlines and it costs you 100. Shall I proceed?

USER: Yes, you can go ahead.

ASSISTANT: On whose name you would like to book this ticket?

USER: Thank you for the support. I am Susan Lewis.

ASSISTANT: Your ticket has been booked with 1014 flight number.

USER: Thank you.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.