You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jonathan King.

ASSISTANT: King, how may I aid you?

USER: I want to book a ticket from EWR to DCA to attend seminar, can you help me in booking?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My departure date is on 12/29 and return on 12/31.

ASSISTANT: Please give me a moment to check for available flights.

USER: Sure.

ASSISTANT: AA airlines with flight 1027 is providing service with a connecting flight and ticket costs you 200 in economy class.

USER: Please proceed for booking.

ASSISTANT: Your ticket is reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.