You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Linda White, can you find a flight for me? I am planning to visit my family members.

ASSISTANT: Sure Linda, please provide me your airport codes.

USER: My travelling airport codes are OAK and DCA.

ASSISTANT: Ok, may I know your travelling dates?

USER: My travelling dates are 11/18 and 11/20. 200 is my price limit.

ASSISTANT: Ok, wait a moment.

USER: Sure.

ASSISTANT: As per your request, there is a flight available for you. Shall I book?

USER: That's great, please proceed.

ASSISTANT: Your ticket has been booked with flight number 1009 and airline is AA.

USER: Thank you for your help.

ASSISTANT: Welcome.