You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Christopher Wright here.

ASSISTANT: How can I assist you?

USER: I would like to prefer a flight in the afternoon hours for my arrival. So can you book the flight ticket?

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

USER: The travel dates are from Sept 21 to Sept 23.

ASSISTANT: Could you please provide the airport codes?

USER: My airport codes are from IAH to LGA.

ASSISTANT: Can I know the connection limit please?

USER: I would like to prefer a stopover flight.

ASSISTANT: Do you have any requirements?

USER: No.

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

USER: Not a problem. Thank you.

ASSISTANT: Thank you for approaching us.