You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kenneth Wilson.

ASSISTANT: How can I help you?

USER: I am planning to book a ticket to attend a meeting at ORD. Can you please help me out to book a ticket from HOU?

ASSISTANT: Sure, we are gleeful to help you. May I know your travelling dates?

USER: I would like to travel on Sept 09 and return back on Sept 11.

ASSISTANT: Is there any specifications for you?

USER: Yes, my depart time is evening.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights are available on your journey routes.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for availing us.