You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help 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, may I know your name please?

USER: Thanks for the response, my name is Ashley Gonzalez.

ASSISTANT: Ok, please wait for a moment.

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

ASSISTANT: Sorry, there was no reservation found with your given name.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for opting us.