You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: I would like to travel from IAD to JFK, help me in booking a flight?

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

USER: I like to travel on Apr 26 to 28.

ASSISTANT: Ok, do you have any other specifications?

USER: Yes, I prefer to travel in normal-cost airlines.

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

USER: Ok, but I need connecting flight also.

ASSISTANT: I found a flight for you with United Airlines and it costs you 300. Shall I proceed to reserve a seat in this single connecting flight?

USER: Proceed for booking.

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

USER: Proceed for booking in the name of Mark Williams.

ASSISTANT: Your ticket has been booked with 1010 flight number Mark Williams.

USER: Thank you?

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