You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I serve you today?

USER: Please book a ticket from Washington DC-DCA to Seattle, WA-SEA.

ASSISTANT: Ok, I need your travel dates to search available flights for you?

USER: Departure is on 06/21 and 06/23 is my return date.

ASSISTANT: Let me know your name?

USER: I am Jennifer Wilson.

ASSISTANT: A flight is available in JetBlue airline with a less fare of 100. Are you ok with this?

USER: Please mention flight number?

ASSISTANT: Flight number is 1021.

USER: Please book a ticket.

ASSISTANT: Ok, your ticket has been booked successfully with 1021 flight. Thank you.

USER: Please provide connections limit?