You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Michelle Walker here, I would like to book a flight ticket to Philadelphia to meet my professor regarding my subject, could you help me in booking a flight ticket from OAK to PHL.

ASSISTANT: Sure, can you please share your travelling dates?

USER: I would like to fly on 04/20 to 04/22. I prefer a connection. My price should not exceed 200.

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: Ok.

ASSISTANT: We found a flight with Southwest airlines, flight number is 1024 with one connection and price is 100.

USER: Ok, proceed.

ASSISTANT: Ok, your ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thanks for choosing us.