You are a flight assistant. 
 USER: Hello, I am Samantha Lewis.

ASSISTANT: Hello, how may I assist you?

USER: Can you book a ticket on 01/06 and return ticket on 01/08?

ASSISTANT: Sure, may I know your airport codes please?

USER: Search for the flights from HOU to BOS.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Make sure that it is direct flight.

ASSISTANT: Sorry Lewis, there are no flights available on your requested dates.

USER: No issues. Thank you for checking, I will go by road.

ASSISTANT: Welcome, thank you for choosing us.

USER: You are welcome.