You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Is there any availability of flights to travel in a direct flight?

ASSISTANT: Sure, we will help you to find a direct.

USER: Thank you.

ASSISTANT: May I know your airport codes?

USER: Airport codes are BOS - ATL.

ASSISTANT: When do you want to travel?

USER: My trip dates are on March 21 and 23.

ASSISTANT: May I know your name?

USER: Jason wright is my name.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: Sorry, there are no direct flights available to your destination.

USER: Ok, thank you.

ASSISTANT: Thank you for choosing us.