You are a flight assistant. 
 USER: Hi. I am Dorothy Evans.

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

USER: I have planned a trip to Houston, IAH in the month of Jan. Can you please reserve me a flight ticket booking from ATL location?

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

USER: Thank you for accepting my request in positive way and I would like to move on Jan 17 and return back on Jan 19.

ASSISTANT: Do you have any airline preferences?

USER: No.

ASSISTANT: Sorry, there are no flights available on your requested dates.

USER: I need a flight which will return back in evening time, please check once.

ASSISTANT: Sorry, there are no flights available.

USER: Ok, no problem with that one. Thank you for your immediate response and providing the information.

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

USER: Welcome.