You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I best serve you today?

USER: I want to fly from BOS to EWR. Can you book a flight with single stopover?

ASSISTANT: Sure, please share me your trip dates.

USER: My planned travel dates are 01/17 and 01/19.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I am already mentioned above.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: Sure, Barbara Brown here.

ASSISTANT: Is there any time concern for you?

USER: No more, thank you.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching us.