You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please book a ticket from BOS to EWR? As I'm planning to visit New York.

ASSISTANT: Let me know your travelling dates.

USER: Sure, my planned departure and return travel dates are 21st and 23rd of June.

ASSISTANT: Do you have any preference?

USER: Yes, I prefer single connected flight.

ASSISTANT: Can I know your name?

USER: Myself Brenda Harris.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you.