You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Please help me out in booking the ticket from BOS to IAD.

ASSISTANT: Sure, can you please share me your travelling dates?

USER: My trip dates will be Apr 18 to Apr 20.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other specifications in your journey?

USER: No.

ASSISTANT: May I know your name?

USER: Lisa Evans is my name.

ASSISTANT: We found 1021 Delta Airlines with single connection and price of 100, shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for reaching us.