You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I would like to book a ticket from EWR to BOS, can you please help me with that?

ASSISTANT: Sure, may I know the travelling dates?

USER: The travel dates are from 04/25 to 04/27.

ASSISTANT: Do you have any connection limit?

USER:  I need break in my journey and I am comfortable with business class.

ASSISTANT: Are there any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: Jason White here.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, no flights found with your chosen dates.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for opting us.