You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: My name is Ronald Hernandez. Can you help me to book a flight ticket?

ASSISTANT: At what dates would you like me to book the ticket?

USER: The journey dates are on Apr 9 to Apr 11.

ASSISTANT: Can I know the source and destination?

USER: Sure. My source and destination is from Philadelphia, PA - PHL to Phoenix,AZ - PHX.

ASSISTANT: Wait a moment.

USER: Make sure that the price limit should not exceed 500 and with one connection.

ASSISTANT: There is flight which matches you,The details are Airline: Spirit, and flight number: 1020. Can I proceed for further process?

USER: Sure.

ASSISTANT: OK, Your booking is done.

USER: May I know the price and number of connections?

ASSISTANT: Price : 100 and connections : 1.

USER: OK.

ASSISTANT: Have a great day.