You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I assist you?

USER: I am Anthony Campbell. I have planned for a family tour at Houston, so I want to book a connecting flight ticket. Please help me.

ASSISTANT: Sure, may I know your travelling airport codes?

USER: My airport code are ORD- HOU.

ASSISTANT: Can you help me with your travelling dates?

USER: I want to fly on 11/02 and return on 11/04.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, there is no flight is available as per your details.

USER: That's fine. Thank you.

ASSISTANT: Thank you for choosing us, have a nice day.