You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me in booking a flight ticket to DTW from IAH?

ASSISTANT: Sure, can I know the travel dates please?

USER: My planned dates of travel are from Aug 01 to Aug 03.

ASSISTANT: May I know your name please?

USER: I am Larry Evans.

ASSISTANT: Can I know the connection limit please?

USER: I need a connecting flight.

ASSISTANT: Do you have any requirements?

USER: I want to fly in economy class.

ASSISTANT: Ok, wait a moment please.

USER: Ok.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us.