You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am John Scott, can you please help me in booking my flight ticket to IAH from DTW and I need a flight which returns in the evening?

ASSISTANT: Sure, I am here to help you with that. Could you send me your travelling dates?

USER: Thank you for considering my request. My travelling dates are July 31 and Aug 02.

ASSISTANT: Ok, do you have any other specifications?

USER: I need a connecting flight for my journey.

ASSISTANT: Sorry to say that, there are no flight's available based on your journey details.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for approaching us.