You are a flight assistant. 
 USER: Hello,. I am Mark Wilson.

ASSISTANT: Hello, how can I be your helping hand?

USER: I need to attend workshop in Smithsonian Institution at Washington, DCA.

ASSISTANT: Ok.

USER: Please help me out with a connecting flight.

ASSISTANT: Sure, I am perky to help you. Can I know your travelling dates?

USER: My preferred travelling dates are Depart date on 02/14 and return date on 02/16.

ASSISTANT: Help me with your boarding airport code please.

USER: My source code is IAH and Destination code is DCA.

ASSISTANT: Please, wait for a while.

USER: Ok.

ASSISTANT: Thank you for being patience, there is a flight available with UA airline, flight number 1029 with fare 100 and a lay by.

USER: Please go with booking.

ASSISTANT: Your booking has been confirmed.

USER: Thanks for reaching us.

ASSISTANT: Thank you for reaching us.