You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to change my existing reservation, as my health is not good. Can you please help me out with it?

ASSISTANT: Sure, please provide me the name to check for the status.

USER: My name is Gary Wright.

ASSISTANT: Please be on hold, I will get back to you in a minute.

USER: Ok, sure. I will wait for your response.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: Here, there is no active reservation have been found under your name in our database to amend it.

USER: Ok, not a problem. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.