You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Please book a ticket from IAD to JFK to attend Client meeting.

ASSISTANT: May I know your itinerary dates?

USER: My travelling dates are June 24 and June 26.

ASSISTANT: May I know your connection limit?

USER: I want single connected flight.

ASSISTANT: Which class do you prefer?

USER: I am comfortable with any class.

ASSISTANT: May I know your name?

USER: Sure, I am William Williams.

ASSISTANT: Please wait for a while, let me check for a best flight for you.

USER: Ok.

ASSISTANT: UA airlines with flight 1004 is providing a connecting flight and ticket costs you 100 in economy class.

USER: Please proceed if the flight return at afternoon.

ASSISTANT: Your ticket is confirmed William Williams. Flight departs at 11:00 hours and arrives at 1:00 hours.

USER: Ok, Thank you.

ASSISTANT: Thank you for reaching us.