You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Stephanie Walker want to change my reservation owing an emergency.

ASSISTANT: Sure, I am here to help you.

USER: Can you help me in changing?

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for your time, there is no reservation found in your name to change.

USER: Ok, no issues. Thank you for your response.

ASSISTANT: Thank you for reaching us.