You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. How can I support you?

USER:  I am Jonathan Green, I want to book a ticket.

ASSISTANT: OK, please provide me your journey details?

USER:  I need to travel on Sep/03 from TX-HOU to TX-IAH, And return on Sep/05.

ASSISTANT: Please wait for a moment, I will check an get back to you.

USER: OK,.

ASSISTANT: Thank you for your patience. Sorry to say there is no any flight on your details.

USER: OK, No problem, Thank you for the information.

ASSISTANT: Thank you for connecting with us.