You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: William Thomas here. I want to go for a small holiday trip. so please book my ticket from BOS to ATL.

ASSISTANT: Sure, when you are planing to make your journey?

USER: My travelling dates are 07/08 and 07/10.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Sorry to notify that, we did not find any flights matching your journey dates.

USER: No issues, thank you for your response.

ASSISTANT: Thank you for choosing us.