You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I had a plan to visit the Historical places in Boston. So can you help me in booking a flight ticket.

ASSISTANT: How are you doing?

USER: Yes, I am fine, thank you. What about you?

ASSISTANT: I am fine, Can I know your name for booking?

USER: Sure, my name is Nancy Campbell.

ASSISTANT: Nancy, can you provide me the country codes where you want to travel?

USER: The country codes are NV-LAS and MA-BOS.

ASSISTANT: Let me know your journey dates?

USER: The starting date is 10/27 and mostly the return might be on 10/29.

ASSISTANT: Give me a moment.

USER: Can you check for the flight with cost is 200, because I don't like to spent more money for the travelling only, so that I can enjoy in Boston.

ASSISTANT: Gathering your details, I got a flight with flight number 1014. I am sorry Nancy, I got a flight with price 1100.

USER: I am so sad to hear this. But Its OK, thank you for checking out for the flight.

ASSISTANT: Thank you.