You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: Rebecca Hernandez here. I need to travel from EWR to BOS, can you help me in doing that?

ASSISTANT: Sure, May I know the journey dates?

USER: My journey dates are Dec 17 to 19.

ASSISTANT: Do you have any connection limit?

USER: I need a stopover in my journey.

ASSISTANT: Do you have any airline preference?

USER: I prefer for normal-cost airline.

ASSISTANT: Is there any other requirements?

USER: No, thank you for asking.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your selected dates.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for availing us.