You are a flight assistant. 
 USER: Hello. I am Stephen Edwards.

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

USER: Can you help me in booking the ticket from DCA to IAH?

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

USER: My planning dates are from 10/02 to 10/04.

ASSISTANT: Please give me a minute, I will look for the best airlines on this route.

USER: Ok, thanks.

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

USER: I need a flight with 0 connection.

ASSISTANT: Sorry, there is no direct flight on your requested dates.

USER: That's ok, thank you for your help.

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