You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a flight ticket with one connection, can you help me?

ASSISTANT: Sure, may I know your name please?

USER: I am Robert Lopez.

ASSISTANT: Do you have any price limit?

USER: The price limit should be under 500.

ASSISTANT: Can you please mention your airport codes?

USER: My source is NC-CLT and my destination is AZ-PHX.

ASSISTANT: Please let me know your dates of travel?

USER: I will start on 07/21 and I intend to return on 07/23.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: Thank you for being patient. There is a UA airline with flight number 1006 matching your request.

USER: Ok, you can confirm my booking.

ASSISTANT: Ok, your booking has been confirmed.

USER: Thanks for your quick response.

ASSISTANT: Thank you and have a great day.