You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to visit Millennium Park at Chicago, could you please help me with booking a flight ticket from DFW to ORD?

ASSISTANT: May I know your trip dates?

USER: I would like to depart on May 3rd and return on May 5th.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Are there any other requirements?

USER: Make sure that my return time must be afternoon.

ASSISTANT: May I know your name please?

USER: I am Nicole Rodriguez.

ASSISTANT: Sorry, there is no flight available with your details.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.