You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Linda Gonzalez.

ASSISTANT: How can I assist you today?

USER: I want to book a ticket from DCA to BOS to attend seminar in Boston, can you help me in booking?

ASSISTANT: Sure, can you please share your travel dates?

USER: I am departing on 04/28 and return on 04/30.

ASSISTANT: Let me check for the availability of flight.

USER: Sure. Make sure the connection limit is 1.

ASSISTANT: Linda, I am sorry to inform you that there is no flight available with 1 connection.

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

ASSISTANT: Thank you for reaching us.