You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I just want to book a ticket from PA-PHL to TX-AUS. Can you please help me out?

ASSISTANT: Sure, it's my pleasure to help you. May I know your travelling dates?

USER: Sure, the travelling dates are from 10/12 to 10/14.

ASSISTANT: OK, do you have any additional requirements?

USER: Yes, price should not be more than 200 and the connections limit should be 1.

ASSISTANT: OK, there is a flight available for your request. The flight number is 1003 from Frontier airlines. Shall I proceed to book the ticket?

USER: OK, please book the ticket.

ASSISTANT: OK, may I know your name to book the ticket?

USER: My name is Thomas Thompson.

ASSISTANT: Your booking is done Thomas. Thank you. Have a safe flight.

USER: Thank you.