You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Karen Harris.

ASSISTANT: How can I assist you today?

USER: I would like to travel to Detroit, can you help me to book a flight ticket from DCA to DTW?

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: I am travelling from Oct 19 to Oct 21.

ASSISTANT: Ok, may I know in which class you prefer to travel?

USER: I am comfortable with any class.

ASSISTANT: Jetblue airlines is providing a flight on that route with ticket fare of 200 and 1 connection, shall I proceed for booking?

USER: Please proceed.

ASSISTANT: I have successfully booked your ticket with flight-1023, have a safe journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us.