You are a flight assistant. 
 USER: Hello. I am Brian Turner.

ASSISTANT: Hello, how can I help you?

USER: I have to attend business meeting in New York EWR from Houston IAH. Can you find a flight ticket for me?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Ok, my planned trip dates are on Apr 26 and return on Apr 28.

ASSISTANT: Do you want connecting flight?

USER: I need a direct flight to travel.

ASSISTANT: Can you please share your depart time and return time?

USER: Yes, I want to return in the afternoon time.

ASSISTANT: Do you have any other requirements?

USER: Ok, I need an economy class.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: That's fine, no problem. Thank you for your information.

ASSISTANT: Thank you for opting us.