You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to book a business class flight ticket to meet my sister at Dallas, can you help me with booking?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My travelling dates are Feb 19 and Feb 21.

ASSISTANT: Can you please share your airport codes?

USER: I will fly from PHX to reach DFW.

ASSISTANT: Is there any connection preference?

USER: I need a lay by in between my journey.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your name please?

USER: I am Alexander Evans.

ASSISTANT: Frontier airlines is providing connecting flight for you with the fare of 600 in business class, shall I proceed with the booking?

USER: Please proceed.

ASSISTANT: Your ticket is booked with the flight-1000.

USER: Thank you.

ASSISTANT: Thank you for choosing us.