You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Can you please help me in booking a flight ticket from Boston, BOS to reach Seattle, SEA?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: My journey dates are from Sept 15 to Sept 17.

ASSISTANT: May I know your name to proceed further?

USER: My name is Richard Collins.

ASSISTANT: Do you have any requirement?

USER: I need a direct flight ticket.

ASSISTANT: Do you have class preference?

USER: I prefer economy class flight.

ASSISTANT: Is there any other requirement to be met?

USER: My return time is morning.

ASSISTANT: Sorry Richard Collins, there is no flight in your route.

USER: Ok, that's not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your information.