You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Katherine Edwards. I need to change my existing reservation, Can you please help me with that?

ASSISTANT: Sure, I am here to help you. Please give me a minute, I will check the status and get back to you.

USER: Sure.

ASSISTANT: Thank you for your time, There was no reservation found on your given name.

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

ASSISTANT: Thank you for reaching us.