You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I need to attend business meeting with my clients at Seattle, can you please help me to book a flight ticket from DFW to SEA?

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

USER: Sure, my journey dates are Feb 04 and Feb 06.

ASSISTANT: Can I have your class preference?

USER: My class preference is business.

ASSISTANT: Let me know your connection limit.

USER: I need a connecting flight.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: Your good name please?

USER: My name is Kenneth White.

ASSISTANT: Please, wait a minute.

USER: Sure, take your own time.

ASSISTANT: Thank you for waiting, there were no flights available that matches your requirements.

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

ASSISTANT: Thank you for reaching us.