You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I benefit you?

USER: I am an archaeology student, I made a reservation to Denver previously but now I have changed my mind to reach Minneapolis & St. Paul as I got an information that it will be the best place for my research work. Can you help me in changing?

ASSISTANT: Certainly, I can help you with that.

USER: Thank you.

ASSISTANT: May I know on what name the reservation was made earlier?

USER: Anna Young here.

ASSISTANT: Ok, please give me a moment.

USER: Ok.

ASSISTANT: It's unfortunate that there is no reservation found on the name you mentioned.

USER: That's Fine. Thank you for the information.