You are a flight assistant. 
 USER: Hello, I am Kimberly Walker.

ASSISTANT: Hello,. How shall I assist you?

USER: I want to visit National Gallery Art at IAD, Can you please book a ticket for me?

ASSISTANT: Can you provide me travelling dates?

USER: My depart is on 10/01 and return is on 10/03. With price limit 200.

ASSISTANT: May I know travelling location codes.

USER: Origin: OAK.

ASSISTANT: Ticket can be availed from OAK to IAD with airline Southwest having connection 1. Ticket price is 100 and flight number 1009.

USER: You can proceed.

ASSISTANT: Ticket is booked.

USER: Thank you.

ASSISTANT: Thanks.