You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. Tell me how can I assist for you?

USER: I am Jacob Smith. I want to book a ticket from DCA to ORD, can you help me in that?

ASSISTANT: Can you please tell me travelling dates?

USER: I proffered to travel on 11/19 to 11/21.

ASSISTANT: As per your details, there is a flight for you with connection limit 1 and price is 100.Flight number is 1004. May I proceed with this flight ticket?

USER: Proceed for booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.