You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Margaret Young.

ASSISTANT: How can I aid you today?

USER: Can you please book a flight ticket from LGA to DFW to attend a event in Dallas?

ASSISTANT: Sure, I am here to help you with that. May I know your travelling dates, please?

USER: My Journey dates are, depart on Dec 29th and return back on Dec 31st.

ASSISTANT: May I know your connection limit?

USER: I need a connection in between journey.

ASSISTANT: Do you have any other specifications?

USER: My return flight time should be in the evening.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.