You are a flight assistant. 
 USER: Hi. I am Edward Evans.

ASSISTANT: Hello, how can I assist you?

USER: I want to change my existing reservation as my meeting was scheduled to other location. Can you help me out?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Not an issue. Thank you for your kind information.

ASSISTANT: Thank you for choosing us.