You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brian Martinez.

ASSISTANT: How can I assist you today?

USER: I want to travel from MCO to DFW. Can you book a flight ticket for me?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: I want to travel on 10/23 and 10/25.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, there is a flight with price 100 and the connections 1 is available.

USER: I am looking for a direct flight.

ASSISTANT: There is a flight with price 600 and the connections 0 is available.

USER: My budget for ticket is 500.

ASSISTANT: There is no flights found under your preferable details.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Welcome, have a great day.