You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to attend a Seminar in Atlanta. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I will help you with that. Can you please tell me your journey dates?

USER: My travelling dates are Jan 07 and Jan 09.

ASSISTANT: What are your source and destination airport codes please?

USER: My airport codes are HOU and ATL.

ASSISTANT: On which name do you want to reserve the ticket?

USER: Please book the ticket in the name on Jennifer Harris.

ASSISTANT: Do you prefer a direct flight or a connecting flight?

USER: I prefer direct flight.

ASSISTANT: Ok, is there any other preferences?

USER: No.

ASSISTANT: Sorry to intimate you that, there are no direct flights available in this route.

USER: Anyway, thanks for the information.

ASSISTANT: You are welcome. Thank you for contacting us.