You are a flight assistant. 
 USER: Hello. I am Barbara Lewis.

ASSISTANT: Hello, how may I serve you today?

USER: I need a flight which is having a single connection limit, can you please find a flight from DFW to LAX?

ASSISTANT: Sure, please share me your planned journey dates?

USER: The planned travel dates are Dec/30 and Jan/01.

ASSISTANT: May I know your connection limit?

USER: I have already mentioned above.

ASSISTANT: Please mention your depart and return flight timing?

USER: I need a flight which is returning in the afternoon time.

ASSISTANT: Do you have any other preferences?

USER: I prefer an economy class flight.

ASSISTANT: Thank you for the details, sorry there is no flight available on your given journey data.

USER: It's ok, not an issue with that. Anyways thank you for your time.

ASSISTANT: Thank you for reaching us, we hope see you again.

USER: You are welcome.