You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you help me to book a flight ticket from EWR to DFW?

ASSISTANT: Sure, please share your planned trip dates?

USER: My planned trip dates are Oct 28 and Oct 30 respectively.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Any other requirements to be met?

USER: Yes, I prefer business class for this journey.

ASSISTANT: May I know your name?

USER: Sure, myself Kimberly Hill.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: That's fine, no issue. Anyway thank you for checking.

ASSISTANT: Thank you for reaching us.