You are a flight assistant. 
 USER: Hello. I am Matthew Nelson.

ASSISTANT: Hello, how may I guide you?

USER: I have to attend a client meeting in Seattle, can you please help me in flight ticket booking from DCA to SEA?

ASSISTANT: Sure, can I know your preferable dates?

USER: Thank you and my planned dates are Aug, 7th to 9th.

ASSISTANT: I found an economy class ticket in UA airlines with normal cost of 100 and it is a single connecting flight. Can I book your ticket?

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

ASSISTANT: Your ticket is booked with flight 1018.

USER: Thank you for your enormous help in my flight ticket booking.

ASSISTANT: Thank you, have a good day.

USER: Welcome.