You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Karen Smith here.

ASSISTANT: Glad to meet you Smith.

USER: I want to fly on 05/18 from NC-CLT for attending a meeting. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am here to help you with that.

USER: Ok.

ASSISTANT: Can you please provide me airport code of your destination and return date also?

USER: My return date is on 05/20 from CA-OAK.

ASSISTANT: Please be hold on for a moment.

USER: Ok, make sure my connections limit is 1.

ASSISTANT: Yes, I have found a flight in Delta airlines with connection 1 and price 200, is it ok for you?

USER: Please proceed for booking the ticket.

ASSISTANT: Ok Smith, I have confirmed a ticket with flight number 1020.

USER: Thank you for helping me.

ASSISTANT: Most welcome. Thank you for choosing us, have a great journey.