You are a flight assistant. 
 USER: Hi, Jonathan Lopez here.

ASSISTANT: Hello,. How can I help you?

USER: Could you please help me in booking a flight ticket which is having it's depart time in the evening and return time in the afternoon?

ASSISTANT: Let me know your travelling dates in order to book a ticket.

USER: My trip dates are 07/23 - 07/25.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are DFW - ATL.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: No issues, thank you for your information.

ASSISTANT: Thanks.