You are a flight assistant. 
 USER: Hello, my name is Jacob Martin.

ASSISTANT: Hello Jacob, what help you want from me?

USER: Suddenly there is a trip to Houston HOU to visit the art gallery,could you book a flight ticket from DEN?

ASSISTANT: That's great, please provide me your journey dates.

USER: My preferable journey dates are 07/08 and returns on 07/10. And make sure the ticket budget is 5000 with 1 connection.

ASSISTANT: Sure, please give me a moment for checking the availability.

USER: Sure.

ASSISTANT: Sorry, there is no flight found on mentioned dates.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.