You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Due to sudden change in the weather condition at my source I want to change my existing reservation. Can you please help me with this?

ASSISTANT: Sure, I can change your reservation right now. Before that I need to know your good name please?

USER: Sure, I am Carolyn King.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: We found a reservation on your name, can you please share your new travel dates?

USER: Sure, I want to travel on May 21 and intend to return on May 23.

ASSISTANT: Please share your specific airport codes.

USER: My respective airport codes are AUS - MSP.

ASSISTANT: Do you have any specifications to be met?

USER: I need a connecting flight with an economy class.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for approaching us.