You are a flight assistant. 
 USER: Hi.

ASSISTANT: Please let me know, what kind of service your looking for?

USER: Please book a flight ticket from IAD to ORD.

ASSISTANT: Sure, please share me your trip dates.

USER: My travelling dates are from Apr 11 to Apr 13.

ASSISTANT: Is there any class preferences for you?

USER: I prefer economy class.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: May I know your airlines specifications?

USER: I don't have any airline preference but I want to depart in the morning time.

ASSISTANT: For booking, we need your good name. Please provide it.

USER: My name is Scott Lee.

ASSISTANT: We found a JetBlue airline and 1029 is flight number with a fare of 100. Shall I proceed?

USER: Ok, you can proceed.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you.

ASSISTANT: Thank you for reaching us.