You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, may I know your name please?

USER: My name is Eric Thomas.

ASSISTANT: Kindly, wait a while.

USER: Ok, sure.

ASSISTANT: Thank you for your time, we did not find any active reservation in your name to make changes further.

USER: Ok, no problem. Anyways, thanks for the information.

ASSISTANT: Thank you for reaching us.