You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Could you please book a flight ticket from BOS to OAK as I want to attend a pioneer festival?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My travelling dates are Nov 20 and Nov 22.

ASSISTANT: Can you please share your connection limit?

USER: I am comfortable with any flight.

ASSISTANT: May I know your name please?

USER: My name is Paul Edwards.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: I want to depart in the afternoon.

ASSISTANT: Paul Edwards, there are no flights available in your route.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for reaching us.