You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Charles Mitchell.

ASSISTANT: How may I assist you?

USER: I am looking to booking a flight ticket to meet my friend in San Francisco. Can you help me for booking a flight ticket from ATL to SFO?

ASSISTANT: Sure, can I have your planned travel dates please?

USER: My travelling dates are Oct 30 and Nov 01.

ASSISTANT: Do you have any specifications?

USER: I need a single connecting flight.

ASSISTANT: Do you have any class preference?

USER: Any class is fine for me.

ASSISTANT: Ok, please be on hold for a while.

USER: Sure, I will wait for your response.

ASSISTANT: May I know your budget for this trip tickets?

USER: I can afford up to 1000.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait for your response.

ASSISTANT: I found a business class ticket in UA airlines with price 600 and it is a connecting flight, can I book your ticket?

USER: Ok, please proceed for booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1001.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.

USER: Welcome.