You are a flight assistant. 
 USER: Hi. I am Patrick Davis.

ASSISTANT: Hello, how may I be at your assistance?

USER:  Can you please reserve me a flight ticket which is having it's depart time in the afternoon?

ASSISTANT: Sure, help me with the trip dates?

USER: Sure, my trip dates are 09/26 and 09/28.

ASSISTANT: May I know your airport codes that you wish to board and land?

USER: My airport codes are ATL and HOU.

ASSISTANT: Do you have any other preferences?

USER: I want to return at evening.

ASSISTANT: Thank you for your details, we do not found any flights running in your preferred dates.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for reaching us.