You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you aid me to book my ticket from BOS to CLT?

ASSISTANT: Sure, I will help you. Please help me with your planned travelling dates.

USER: My trip dates are Aug 12 and Aug 14.

ASSISTANT: Please help me with your name.

USER: Jonathan Gonzalez here.

ASSISTANT: Do you need a break in between your journey?

USER: I prefer for a direct flight.

ASSISTANT: Do you have any other preferences in your journey?

USER: No other preferences for me.

ASSISTANT: Please allow me a minute.

USER: Ok.

ASSISTANT: Jonathan Gonzalez, I am really sorry to inform you that there are no flights available for your journey.

USER: Thank you for the help.