You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Karen Johnson, I want to book a flight ticket from San Francisco to attend an interview in Charlotte.

ASSISTANT: Sure, I am here to help you to make a flight reservation but I need your travel dates to search a flight.

USER: I would like to start on Aug 21st and my return date will be on Aug 23rd.

ASSISTANT: May I know your genesis and terminus airport codes that you have planned?

USER: My boarding and landing airport codes are SFO and CLT.

ASSISTANT:  According to your information, I have found a flight with single stop over in your journey with a minimum fare of 200 is provided by Frontier airlines in the flight 1023. Shall I proceed with this?

USER: Yes, you can proceed with the booking.

ASSISTANT: Your ticket has been booked with your name Karen Johnson.

USER: Thank you for your assistance in booking.

ASSISTANT: My pleasure. Have a safe journey.