You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Samuel Brown.

ASSISTANT: What can I do for you now?

USER: I need to book a flight ticket with single stop over, can you help me that please?

ASSISTANT: Sure. Let me know your airport codes for booking a ticket.

USER: My source point is MN-MSP to DC-IAD.

ASSISTANT: What is your journey dates?

USER: I would like to travel on 10/07 to 10/09. I need price limit should not exceed 500.

ASSISTANT: Thanks for your details. You have 1010 flight with UA airline, price is 100 of 1 connection. Can I reserve your ticket?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket was confirmed.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.