You are a flight assistant. 
 USER: Hello. I am Stephen Allen.

ASSISTANT: Hello, how can I guide you for today?

USER: I would like to travel from ATL to SEA to attend for flower festival. Can you please reserve me a flight ticket?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I am willing to travel on Sept 19 and return on Sept 21.

ASSISTANT: Do you have any airline preferences?

USER: No.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I need a ticket in business class. There should be a halt in between my journey.

ASSISTANT: Sorry, there are no flights available with your requirement.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for contacting us, have a nice day.