You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Gregory Wright, can you help me to book a flight with 500 price limit?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travelling dates are 12/26 and 12/28.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: I would like to travel from LAX to PHL.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Sure, take your time.

ASSISTANT: There is a flight with ticket fare 100 in Spirit airlines with a stopover. Is it ok for you?

USER: Book that flight.

ASSISTANT: Your booking is confirmed with flight number 1022.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us, have a nice day.