You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: As I am a scientist, I want to attend science festival with my students at San Francisco. Can you help me to book a ticket?

ASSISTANT: Sure, I would be happy to assist you. Could you please provide your airport codes?

USER: My airport codes are OAK-SFO.

ASSISTANT: Kindly mention your journey dates please?

USER: My journey dates are 11/18 and 11/20.

ASSISTANT: Let me know your budget for flight ticket.

USER: Price should not cross 1000.

ASSISTANT: Thanks for providing your information. We found a flight with an airline Southwest of flight 1008 and price is 200 which provides service on your route. Would you like me to proceed?

USER: Please proceed.

ASSISTANT: Can I know your name please for further proceedings?

USER: Cynthia Jones here.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.