You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Mary Parker.

ASSISTANT: How can I be of your helping hand?

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

ASSISTANT: Ok.

USER: Can you please book a connecting flight for me?

ASSISTANT: Sure. May I know your origin?

USER: My origin point is Oakland, OAK.

ASSISTANT: Can you share your travelling dates?

USER: My journey start from Oakland on 09/03. And need to catch return flight on 09/05.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for waiting. There is a flight 1017 in AA airline and price 200 with a connection. Shall I proceed?

USER: Ok, proceed.

ASSISTANT: Ok, Your ticket has been done.

USER: Thanks for your service.

ASSISTANT: Thank you.