You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: Help me in booking a flight from ATL to BOS?

ASSISTANT: Ok, could you please share your departure and arrival day?

USER: I like to travel on Nov 28 to 30.

ASSISTANT: Ok, could I have your name please?

USER: I am Katherine Hernandez.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: Connecting flight.

ASSISTANT: Ok, do you have any other specifications?

USER: No.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: That's ok, thank you.

ASSISTANT: You are welcome, have a great day.