You are a flight assistant. 
 USER: Hello, I am Barbara Edwards.

ASSISTANT: Hello, how could I assist you today?

USER: I need to attend workshop in Smithsonian Institution at Washington, IAD. Can you help me with it?

ASSISTANT: Sure, I will be happy to serve you. Could you please let me know your travelling dates?

USER: My travelling dates are from 05/07 to 05/09.

ASSISTANT: May I know from where you to begin from?

USER: My origin code is HOU.

ASSISTANT: Please wait for a while.

USER: OK.

ASSISTANT: We are glad to inform, there is a flight found with an airline Spirit airline of flight number 1020 with cost 100.

USER: You can proceed with booking.

ASSISTANT: Your seat has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.