You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: Can you help me in changing my recent reservation?

ASSISTANT: Sure, could I have your name please?

USER: My name is Ashley thomas.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

ASSISTANT: I have found your reservation, can you please tell me your trip dates?

USER: My trip dates are from Jan 29 to Jan 31.

ASSISTANT: Ok, may I know your location airport codes?

USER: My airport codes are from ATL to SEA.

ASSISTANT: Ok, may I know your class preference?

USER: I need to travel in business class.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Sorry, there is no flight with your request.

USER: Ok, No issues. Thank you.

ASSISTANT: You are welcome, have a great day.