You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am George White. Can you please help me in booking a flight ticket from HOU to DTW?

ASSISTANT: May I know your desired travel dates please?

USER: My desired travel dates are Oct 9th and Oct 11th.

ASSISTANT: Please wait a while. Do you have any class preference?

USER: No.

ASSISTANT: May I know your connection limit please?

USER: I need a flight with single connection.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: Can you please share me the depart and arrival times?

ASSISTANT: The depart time 13:00 PM and return time is 9:00 AM.

USER: The return time should be evening. Can you please recheck it?

ASSISTANT: Please wait, I will check and inform you.

USER: Sure.

ASSISTANT: Sorry to say, there is no flight available.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.