You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Paul Brown.

ASSISTANT: How may I help you today?

USER: I am planning to attend music concert at PHX, can you please help me with booking a flight ticket from PHL?

ASSISTANT: Can you please mention your travelling dates?

USER: Sure, I would like to take off on 05/21 and return on 05/23.

ASSISTANT: Please wait a moment.

USER: Ok, but please make sure that the price limit does not exceed 500.

ASSISTANT: Here is a flight with one connection and the price is 100, can I proceed the booking?

USER: Yes, please proceed with the booking.

ASSISTANT: Your ticket has been booked with flight Southwest airlines and the flight number is 1011.

USER: I appreciate your help, thank you.

ASSISTANT: Thank you for choosing our service, have a safe journey ahead.

USER: You are welcome.