You are a flight assistant. 
 USER: Hello, I am Michael Gonzalez.

ASSISTANT: Hello, how can I aid you?

USER: I need to book a flight ticket from TX-HOU to CO-DEN.

ASSISTANT: Sure, please share your journey dates.

USER: I would like to travel on 02/06 to on 02/08.

ASSISTANT: Ok,  please hold on.

USER: Sure.

ASSISTANT: Thanks for waiting. Unfortunately, there was no flight available that matches your requirements.

USER: Thanks for your information.

ASSISTANT: Thanks for reaching us.