You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to book a flight ticket to DEN from HOU, can you please help me out?

ASSISTANT: Sure, let me know your travelling dates?

USER: Sure, my planned travelling dates are June 05 and June 07.

ASSISTANT: Do you have any connection limit?

USER: Yes, I am looking for a flight with 0 connection.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: Can I know your good name?

USER: Sure, my name is Donna Martin.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey routes.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for availing us.