You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Can you please book a ticket from SEA to LAS? As I need to attend CEO conference.

ASSISTANT: Sure, I am here to help you in the booking the flight ticket. Can I have your travelling dates?

USER: Yes, my planned departure and return travel dates are 15th and 17th of September.

ASSISTANT: Ok, do you have any other requirements?

USER: Yes, my maximum connection has to be 1.

ASSISTANT: May I know your name?

USER: My name is Anthony Mitchell.

ASSISTANT: Sorry to say that, there are no flight's available based on your travelling dates.

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

ASSISTANT: Thank you for reaching us.