You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kevin Moore here.

ASSISTANT: How can I aid you at this moment?

USER: Due to sudden change in my planned dates of journey, I would like to change my reservation. Can you please help me out with changing of my reservation?

ASSISTANT: Sure, I can help you with that.

USER: Thank you.

ASSISTANT: I have found your reservation. Can you please mention your new travelling dates?

USER: That's great, I am planning to leave on 02/23 and please book my return ticket on 02/25.

ASSISTANT: May I know your preferable airport code names?

USER: Sure, I want to travel from AUS to BOS.

ASSISTANT: Please give me a moment, I will check flight availability in this route.

USER: Sure, take your time.

ASSISTANT: Based on your information, Spirit airline is ready to serve you with 1 connection with a minimum fare of 200 is available for you. Shall I proceed with this?

USER: That's fine, I am ok with this, you can proceed with booking.

ASSISTANT: I have confirmed your flight ticket, flight number is 1004.

USER: Thank you for your help in booking of my ticket.

ASSISTANT: Thank you for reaching us, have a good day.

USER: Welcome.