You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I would like to book a direct flight to attend for my last exam at New York, so help me to make a reservation to NY - JFK.

ASSISTANT: Sure, may I know your travel dates?

USER: Sure, my travelling dates are 02/20 to 02/22.

ASSISTANT: May I know your origin airport codes?

USER: My source point is WA - SEA at Seattle.

ASSISTANT: Do you have any specification?

USER: I can pay up to 500.

ASSISTANT: May I know your name?

USER: Sure, my name is Justin Rodriguez.

ASSISTANT: There is no reservation on your name. Sorry, there is no flight on your details.

USER: No worries, I will choose the other alternative.

ASSISTANT: Thank you.

USER: Thank you for your support.