You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you please help me in changing my existing reservation?

ASSISTANT: Sure, please provide me your good name to check the reservation status in the reservation list.

USER: My previous reservation has done with the name Donna Thompson.

ASSISTANT: Can you please wait for a moment?

USER: Sure, I will wait for your information.

ASSISTANT: Thank you for waiting. We hardly tried to find your reservation but no reservation has been found with your name in our database to amend it.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for reaching us.