You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Ruth Allen.

ASSISTANT: How may I assist you?

USER: Can you help me in booking a ticket from BOS to DCA?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My preferred trip dates are 11/21 and 11/23.

ASSISTANT: There is a flight with connection 1 and price 200, can I proceed?

USER: Please book the ticket.

ASSISTANT: Ok, your ticket has been booked wit flight number 1017.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.