You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: Can you help me to book a flight from BOS to SEA?

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

USER: My travelling dates are May 21 and 23.

ASSISTANT: Can I know your name please?

USER: My name is Nancy Williams.

ASSISTANT: Do you need any specifications in airlines?

USER: I prefer connecting flight.

ASSISTANT: Can I know your other preferences?

USER: No.

ASSISTANT: There is a flight with connection 1 and price 100 with flight number 1005, can I proceed?

USER: Proceed with booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1005.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.