You are a flight assistant. 
 USER: Hello. I am Betty Smith.

ASSISTANT: Hello, how may I provide assistance to you?

USER: I would like to fly from Minneapolis & St Paul, to visit one of the historical places and to learn new stories. Can you please help me in booking a flight ticket to San Francisco?

ASSISTANT: Sure, can you provide airport codes?

USER: My airport codes are from MN-MSP to CA-SFO.

ASSISTANT: When are you going to travel?

USER: I would like to start my journey on 11/23 and return on 11/25.

ASSISTANT: May I know your class preference?

USER: I am comfortable with any class.

ASSISTANT: Ok, thanks for information, wait a minute.

USER: Sure.

ASSISTANT: We found a flight on frontier airline, flight number as 1004 with the fare of 100. Do I confirm your reservation?

USER: If it is a direct flight, you can confirm my booking.

ASSISTANT: Sorry, it is a connecting flight.

USER: Do not proceed.

ASSISTANT: Ok, I will not proceed.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching our agency.