You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: Can you please help me in booking a flight ticket from SEA to BOS?

ASSISTANT: Sure, I am here to help you with this. Can you please provide your journey dates?

USER: My travel dates are from Feb 09 to Feb 11.

ASSISTANT: Do you have any connection limit for this journey?

USER: I need a connecting flight.

ASSISTANT: Do you have any class preference for this trip?

USER: I prefer economy class for my journey.

ASSISTANT: Do you have any other specifications for this trip?

USER: No.

ASSISTANT: May I know your good name please?

USER: Myself Amy Campbell.

ASSISTANT: Amy Campbell, there are no flight services are available on this route on your provided dates.

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

ASSISTANT: Thank you for contacting us.