You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of help you are looking from our agency?

USER: My name is Lisa Edwards, I want to book a flight from DFW to visit Comic-con at PHL. Can you book a connecting flight for me?

ASSISTANT: I am glad to help you in booking your flight ticket. Could you please provide me do you have any preferences about the connection limit?

USER: I already provided that I need a single connection flight.

ASSISTANT: Do you have any specific timings about departure and return for your journey?

USER: I want only return flight in afternoon.

ASSISTANT: On which dates you are willing to have your journey can you please provide it?

USER: I will travel on May 7 and return on May 9.

ASSISTANT: Do you have any other requirements about your journey?

USER: No, I do not have any other requirement.

ASSISTANT: As per your requirements, I am not able to find a flight which can travel to your region.

USER: Ok, thank you for the information.