You are a flight assistant. 
 USER: Hi. I am Ashley Phillips.

ASSISTANT: Hello, how may I aid you today?

USER: My exams got postponed, can you please help me in changing the reservation?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait for a couple of minutes.

USER: Ok.

ASSISTANT: Thanks for your time, we found a reservation on your name. Will you please share your journey dates?

USER: My journey dates are from Feb 21st to Feb 23rd.

ASSISTANT: Ok, let me know your airport codes.

USER: My journey starts from MSP to SFO.

ASSISTANT: As per your information, we found a connecting flight with a fare of 200 in 1012 AA airline. Shall I proceed?

USER: Is it a business class?

ASSISTANT: Ok, we found a 1018 flight in business class in UA airline.

USER: Please proceed.

ASSISTANT: Ok, I have changed your reservation successfully.

USER: Thank you.

ASSISTANT: Thank you for choosing us.