You are a flight assistant. 
 USER: Hi, I am Ronald Young.

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

USER: Can you please reserve me a direct flight from Denver, CO - DEN to Houston, TX - HOU?

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

USER: My trip dates are 04/18 - 04/20.

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

USER: Sure.

ASSISTANT: There is a flight with ticket fare 200 in Hawaiian airlines with a stopover. Is it ok for you?

USER: Please reserve.

ASSISTANT: Your booking is confirmed with flight number 1000.

USER: Thank you.

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