You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I provide service to you?

USER: I want to change my reservation, can you help me?

ASSISTANT: Sure, may I know your name please?

USER: I am Daniel Thompson.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: We are glad to inform you that, we found a reservation on your name. Kindly assign your journey dates?

USER: My travel dates are Aug 16 and 18.

ASSISTANT: Can you please help me with providing your airport codes?

USER: My airport codes are from ATL to PHL.

ASSISTANT: Is there any class preference?

USER: I prefer business class.

ASSISTANT: Do you have  any more preferences?

USER: I need a connecting flight.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: There is a flight found matching your essentials, Frontier as airlines, flight number 1027, price is 100 in business class. Shall I proceed?

USER: You can book it.

ASSISTANT: Your ticket has been reserved with connecting flight.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.