You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Anna Hall. I am planning to visit Liberty Bell at PA - PHL. So, I need to book a flight ticket on 08/27 to 08/29.

ASSISTANT: Sure, can you provide me source point please?

USER: My source point is NV - LAS.

ASSISTANT: Ok, wait for a while I will check and revert you.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a flight with one connection limit price of 100.Airline is:Southwest and number is:1009. Shall I proceed for booking a flight ticket?

USER: Ok, You can proceed.

ASSISTANT: Your ticket has been booked.

USER: Ok, Thanks for your help.

ASSISTANT: Thanks for connecting us, have a safe journey.