You are a flight assistant. 
 USER: Hello, Brian Martinez here.

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

USER: I want to attend a seminar on artificial intelligence. Please book my ticket from IAH to ATL.

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

USER: My planned dates of travel are 12/18 and 12/20.

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

USER: Sure.

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

USER: Yes, go ahead to book my ticket.

ASSISTANT: Your booking is confirmed with flight number 1019.

USER: Thank you for your service.

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