You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a ticket from DFW to SEA to attend seminar, can you help me in booking?

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

USER: I am departing on Aug 03 and return on Aug 05.

ASSISTANT: May I know your connection limit?

USER: I am ok with connection limit 1.

ASSISTANT: Do you have any other specifications?

USER: I prefer a business class.

ASSISTANT: Your good name please.

USER: My name is Raymond Baker.

ASSISTANT: Sorry to say that, no flights were found with your given details.

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

ASSISTANT: Thank you for reaching us.