You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Donald Green.

ASSISTANT: How may I assist you?

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

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: I want to travel on 06/17 and need to catch return flight on 06/19.

ASSISTANT: Do you prefer a lay by in between your journey?

USER: Yes, I need a lay by.

ASSISTANT: Spirit airlines is available in your route with the ticket fare of 100, shall I proceed with the booking?

USER: Proceed with the booking.

ASSISTANT: Your ticket is booked with the flight-1007.

USER: Thanks for the help.

ASSISTANT: Thank you for choosing us.