You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I want to book a connecting flight ticket to attend an event from NY. Can you help me?

ASSISTANT: Sure, I will assist you with that. Can you please mention your preferable travel dates?

USER: Thank you. 10/10 and 10/12 are my travelling dates.

ASSISTANT: May I know your preferable airport code names for further process?

USER: LGA and IAH are my airport codes.

ASSISTANT: May I know your name for further process?

USER: Gregory Allen.

ASSISTANT: In which class do you want to travel?

USER:  No, But I would like to return  in the afternoon.

ASSISTANT: Do you have any another specifications?

USER: No, I don't have any other specifications.

ASSISTANT: Ok, please hold on a moment.

USER: Ok.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.