You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. In what way can I best address you for the day?

USER: I want to change my recent reservation. Can you help me out?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: On whose name the reservation is done, so that we can check in our reservation list.

USER: I am Emma Moore.

ASSISTANT: Please stand by.

USER: Ok.

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

USER: I want to travel in the flight on July 15 and July 17.

ASSISTANT: Let me know your heading point and landing point?

USER: I would like to travel from ORD to ATL.

ASSISTANT: Do you want any break in between your journey?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any requirements like class and airline?

USER: I prefer to travel in business class.

ASSISTANT: Do you have any particular timings while departing and returning?

USER: No.

ASSISTANT: Please share your good name to proceed further?

USER: I am Emma Moore.

ASSISTANT: Thank you for sharing your details, we are unable to find any flight with the given class.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for consulting our agency, hope we serve you again.