You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Justin Thomas here. I want to travel from HOU to BOS, can you help in booking a flight?

ASSISTANT: Sure, could you please share us your journey dates?

USER: My date of journey is on 08/09 to 08/11.

ASSISTANT: Thomas, let me check for the best flight.

USER: Sure, but I want to travel in direct flight.

ASSISTANT: Sorry Thomas, there are no direct flights available on your given dates.

USER: That's ok. Thanks for your help.

ASSISTANT: Thank you very much for contacting us and have a nice day.