You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Can you please book a flight ticket from SEA to MSP?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Thank you. I have planned my travel dates as July 19 and July 21.

ASSISTANT: Can I know your name please?

USER: Sure, myself Larry King.

ASSISTANT: Do you need any specifications?

USER: I would prefer economy class to travel so please make sure that.

ASSISTANT: Can I know your other preferences?

USER: Sure, I am looking for single connecting flight.

ASSISTANT: There is a flight with connection 1 and price 300, can I proceed?

USER: That is fine, please proceed with booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1000.

USER: Thank you for  your help.

ASSISTANT: Thank you for reaching us.