You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: I need to book a flight ticket from SFO to BOS to enjoy film festivals. Can you make a reservation with fare 1000?

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

USER: Sure, I need to depart on Apr 20 and Apr 22.

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

USER: Yes, you can.

ASSISTANT: Ok, your ticket has been booked with flight number 1000.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.