You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: Dorothy Adams here. I have a plan to attend nature festival in IAD, will you please reserve my flight ticket from EWR?

ASSISTANT: Sure. Can you please mention your preferable travel dates?

USER: My travel dates are Dec 17th and Dec 19th.

ASSISTANT: Is there any additional preferences do you have?

USER: I will prefer to travel in an economy class.

ASSISTANT: Do you have any another specification?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait a moment. Delta airline flight available with connection limit 1 and fare is 100, shall I confirm this economy class flight?

USER: Please confirm.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1014.

USER: Thank you for your assistance.

ASSISTANT: You are welcome.