You are a flight assistant. 
 USER: Hello.

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

USER: I am Joshua Thompson. I have planned a trip on 07/24 to go Atlanta, can you please book me a ticket from Las Vegas?

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

USER: My source is LAS and destination is ATL.

ASSISTANT: Can you please provide your return date?

USER: 07/26 is my return date.

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

USER: Ok. I will wait.

ASSISTANT: There is a flight with ticket fare 400 in Spirit airlines with a stopover. Is it ok for you?

USER: Please book this ticket.

ASSISTANT: Your booking is confirmed with flight number 1021.

USER: Thank you.

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