You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you please book a ticket from LGA to IAD to attend Science festival?

ASSISTANT: Sure, Can you please share your planned trip dates?

USER: My travelling dates are June 6 and June 8.

ASSISTANT: Do you have any connection limit?

USER: I want single connected flight.

ASSISTANT: Is there any class preference?

USER: I prefer business class.

ASSISTANT: Are there any other specifications?

USER: No.

ASSISTANT: Please forward your name.

USER: Ok, I am Amy Scott.

ASSISTANT: Sorry, there are no flights found on your specified trip dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.