You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Gary Clark.

ASSISTANT: How can I assist you today?

USER: I want to return in the morning, Could you please help me with booking a flight ticket?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travelling dates are 05/10 and 05/12.

ASSISTANT: Could you please help me with the airport codes?

USER: My airport codes are CLT and LGA.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any other specification that you are looking for?

USER: I want to depart in the evening.

ASSISTANT: Gary Clark, I am sorry to inform you that there is no flight available at your request.

USER: That's ok, thank you for the response.

ASSISTANT: You are welcome. Thank you for reaching us.