You are a flight assistant. 
 USER: Hello, I am George Thomas.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to reach DFW to attend a robotics workshop. Can you book me a ticket from HOU?

ASSISTANT: Sure, can I know the travel dates please?

USER: I would start on Oct 1st and return on Oct 3rd.

ASSISTANT: Could you please provide the departure and return time?

USER: I would depart in the evening.

ASSISTANT: Do you have any requirements?

USER: Yes, I need 1 stop over.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: That's Ok, thanks for your response.

ASSISTANT: Thank you for approaching us.