You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you help me?

ASSISTANT: Please share your name to proceed?

USER: Amy Clark here.

ASSISTANT: There is no active reservation found under your name to amend as per your preferences.

USER: No problem, thanks for the information.

ASSISTANT: Thank you for choosing us.