You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER:  I need to change my existing reservation as my meeting got changed due to some technical issues, can you please help me with this?

ASSISTANT: Sure, we will help you. Can I have your name to check the reservation list?

USER: I am Samantha Wright.

ASSISTANT: Ok. please be on hold.

USER: Ok.

ASSISTANT: Thank you for waiting, no reservation was found on your name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.