You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am looking for a connecting flight, could you please help me with booking a flight ticket with my requirement?

ASSISTANT: Sure, I will help you to book a ticket. Can you please share your travelling dates?

USER: I would like to depart on Nov 12th and return on Nov 14th.

ASSISTANT: Do you have class preference?

USER: I need a economy class ticket.

ASSISTANT: Please share your codes of the airport, where you want to travel and catch the flight?

USER: My source airport code is LGA and destination airport code is DFW.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight. And make sure that my return time must be afternoon.

ASSISTANT: May I know your name?

USER: I am Nicole Miller.

ASSISTANT: Sorry, there are no flights found based on your details.

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

ASSISTANT: Thank you for choosing us.