You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Anthony Turner. I want to book a ticket from SFO to DEN, Can you please help me?

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

USER: My travelling dates are on July 11 and 13.

ASSISTANT: Can you please share your airline preferences?

USER: I do not have any airline preference.

ASSISTANT: Please share if you want to travel in any specific time?

USER: Return time is afternoon.

ASSISTANT: May I know your connection limit please?

USER: I need a single connection.

ASSISTANT: Anthony Turner, sorry to inform you that non of the airline is providing a flight on your travel dates and locations to book a ticket.

USER: Ok, thank you for informing me.

ASSISTANT: Thank you for choosing us.