You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to travel from DCA to SEA for my business trip, can you please help me out with that?

ASSISTANT: Sure, please help me with your travelling dates.

USER: Thank you for accepting my request, I am planning to move on Apr 19 and please book my return ticket on Apr 21.

ASSISTANT: Ok, please let me know your connection limit.

USER: I will prefer single connection.

ASSISTANT: Ok, Do you prefer business class or economy class?

USER: I don't have any class preference.

ASSISTANT: Ok, Do you have any other preferences?

USER: No.

ASSISTANT: Thank you for providing details, we found a connecting flight in 1005 Hawaiian Airlines with a fare of 200. Can I proceed for booking?

USER: I am ok with this flight, you can proceed with booking.

ASSISTANT: May I know your name for booking purpose?

USER: Sure, my name is Matthew Young.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for availing us.