You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, welcome to flight booking agency. How can I guide you for today?

USER:  I would like to spend some more days with my family, so please help me in changing my existing reservation.

ASSISTANT: Can I have your name to check whether your reservation is existed or not?

USER: Christine Martin here.

ASSISTANT: Can you please provide your new airport codes of your journey?

USER: Source airport code is DFW and destination airport code is MSP.

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: The travelling dates are from 12/06 to 12/08.

ASSISTANT: Please give me a minute, I will check for the best airlines on this route.

USER: Ok sure.

ASSISTANT: I found a flight with flight number 1022 with price 100 and connection is 1, would you like me to proceed with the booking?

USER: You can proceed booking my ticket.

ASSISTANT: Your booking is confirmed with Spirit airlines.

USER: Thank you for helping me.

ASSISTANT: Have a safe journey. Thank you for reaching us.

USER: Most welcome.