You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you help me to book a flight ticket from PHX to LAS?

ASSISTANT: Please share your trip dates?

USER: My trip dates are June 25 and June 27 respectively.

ASSISTANT: Do you have any connecting limit preferences?

USER: I prefer for connecting flight.

ASSISTANT: Spirit Airlines is providing the connecting flight and the fare of 500. Shall I proceed?

USER: Please proceed.

ASSISTANT: May I know your name please?

USER: I am Christopher Davis.

ASSISTANT: Your reservation is confirmed for the flight 1015.

USER: Thanks for helping me.

ASSISTANT: Thank you for choosing us.