You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: I have heard that in Detroit there is Theater Under The Stars which is very different from every where. I am really feeling excited to go there.

ASSISTANT: Good to hear that.

USER: Can you book me flight ticket to fly TX - IAH from IL - ORD?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are 02/03 and 02/05.

ASSISTANT: Can I know your name to proceed further?

USER: Myself Ryan Anderson.

ASSISTANT: Ryan, I am sorry to inform you that there is no flight available at your request.

USER: Ok, I will plan some other time to go there. Thank you for the information.

ASSISTANT: You are welcome. Thank you for contacting us.