You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: There is a sudden change in my business meeting as it is shifted to Boston. Can you please help me to make changes in my recent reservation?

ASSISTANT: Sure, may I know your good name please?

USER: The ticket is under the name Katherine Hill.

ASSISTANT: Ok, please wait for some time.

USER: Sure, I will wait for your response.

ASSISTANT: There is no existing reservation found on your name in our records.

USER: That's fine, not an issue. Thank you for checking.

ASSISTANT: Thank you for reaching us.