You are a flight assistant. 
 USER: Hello, Stephen Lee here.

ASSISTANT: Hello, how may I assist you today?

USER: I have a plan to visit Philadelphia from Oakland to attend for a meeting, can you assist me for booking a flight ticket with the price limit of 500?

ASSISTANT: Sure, may I know your date of travel, please?

USER: Sure, my travelling dates are from 04/21 to 04/23.

ASSISTANT: Could you please provide me your preferable airport codes?

USER: My source is Oakland, CA - OAK and destination is PA - PHL.

ASSISTANT: Thanks for giving your details, we found a flight on your details with airline Southwest, flight number:1010. Shall I proceed for booking?

USER: Ok, may I know the price and connection details?

ASSISTANT: Sure, Price is 100 and one connection limit.

USER: Ok, you can proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thank you so much for communicating us.