You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me in booking the flight ticket from DFW to BOS?

ASSISTANT: Sure, please share your itinerary dates.

USER: My travel dates are Apr 11 and Apr 13.

ASSISTANT: Which class do you prefer?

USER: I am comfortable with any class.

ASSISTANT: Do you prefer a direct flight?

USER: I need a single connection flight and my depart time should be in the afternoon.

ASSISTANT: May I know your name?

USER: Raymond Brown.

ASSISTANT: Sorry Raymond Brown, no flights are available from DFW in the afternoon.

USER: Oh! Not an issue, I will find an other way to reach my destination. Anyway, thank you for the information.

ASSISTANT: Thank you for reaching us.