You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I am planning to conduct an music concert at Oakland. Can you aid me in booking a flight ticket from Philadelphia?

ASSISTANT: Sure,let me know your travelling dates?

USER: I am planning to start on July 4th and return back on July 6th.

ASSISTANT: Please share your airport codes?

USER: Please search with the city names.

ASSISTANT: May I know your connection limit?

USER: I prefer to travel in direct flight.

ASSISTANT: Do you have any other specifications?

USER: I want to start from my source in evening time.

ASSISTANT: Can you please share your good name?

USER: My name is Jeffrey Lee.

ASSISTANT: We found a direct flight 1004 in Southwest airline with price is 100 and class is economy. Shall I proceed?

USER: Yes, you can go ahead.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for the support.

ASSISTANT: Thank you for reaching us.