You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I am looking to travel to Seattle, can you please help you with the ticket booking from Washington?

ASSISTANT: When you are willing to travel?

USER: Thank you. I am willing to travel on the dates of June 8 and June 10.

ASSISTANT: Do you have any class preference?

USER: No but I need a direct flight  to travel.

ASSISTANT: Can you help me with your airport codes?

USER: The origin and destination airport codes are DCA and SEA.

ASSISTANT: May, I know your good name?

USER: My name is Patrick Moore.

ASSISTANT: We found 1020 AA airlines with 0 connection with price 100. Shall I proceed with the booking?

USER: I am fine with that flight to travel, you can proceed to reserve the ticket.

ASSISTANT: Your, booking has been confirmed.

USER: Thanks a lot for your assistance in reserving the flight ticket.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.