You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Can you help me in booking from DFW to EWR, as there is a business meeting to attend?

ASSISTANT: Sure, may I know your trip dates?

USER: My trip dates are Jul 23 to Jul 25.

ASSISTANT: Can I know your connection limit?

USER: I prefer a connecting flight with business class.

ASSISTANT: Is there any other specifications?

USER: I do not have any other specifications.

ASSISTANT: Can you please let me your name?

USER: My name is Laura Baker.

ASSISTANT: Sorry, there are no flights available on your travelling dates.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for choosing us.