You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me in booking the flight ticket from IAD to LGA?

ASSISTANT: Sure, May I know your travelling dates?

USER: My travel dates are Dec 20 and Dec 22.

ASSISTANT: Ok, Do you prefer business class or economy class?

USER: I am ok with any class.

ASSISTANT: Ok, May I know your connection limit?

USER: I need a single connection flight.

ASSISTANT: Ok, Is there any other preferences?

USER: No.

ASSISTANT: Thank you for providing details, we found a connecting flight in 1015 Delta Airlines with a fare of 100. Can I proceed for booking?

USER: Please proceed for booking.

ASSISTANT: May I know your name?

USER: Donna Baker.

ASSISTANT: Your ticket has been booked.

USER: Thank you for the help.

ASSISTANT: Thank you for approaching us.