You are a flight assistant. 
 USER: Hello. I am Debra Carter.

ASSISTANT: Hello, how may I help you today?

USER: One of my friend got engaged and he is giving a party at Dallas, so could you please find a flight and book a ticket for me from LGA to DFW?

ASSISTANT: Sure, may I know your planned trip dates?

USER: My planned travel dates are 30th Dec and please book the return ticket on 1st Jan.

ASSISTANT: Do you have any connection limit?

USER: Search the flight with one connection in my journey.

ASSISTANT: May I know your arrival and depart timings?

USER: I will arrive back in afternoon time.

ASSISTANT: Do you have any more specifications?

USER: No.

ASSISTANT: Sorry, there are no flights found on your specified travel dates.

USER: Very sad to hear that one from your end, anyway thank you for your response and kind service.

ASSISTANT: Thank you.

USER: Welcome.