You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Patrick Parker.

ASSISTANT: What can I do for you at this moment?

USER: Please book a flight ticket from Boston, BOS to Washington, IAD.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you please share your trip dates?

USER: Sure, My trip dates are from 07/25 to 07/27.

ASSISTANT: Ok, how much you can afford for a flight ticket?

USER: I can afford up to 500.

ASSISTANT: Ok, do you need any lay by in between the journey?

USER: Yes, I need.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

ASSISTANT: We found a Frontier airline with fare of 200 and a halt in between the journey matches your schedule. Shall I proceed with booking?

USER: Ok, Proceed with booking.

ASSISTANT: Your ticket has been confirmed with flight number 1026.

USER: Thank you.

ASSISTANT: Thank you for reaching us.