You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to change my recent reservation. Can you help me out?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please help me with your name.

USER: Dorothy Adams.

ASSISTANT: Please allow me a minute.

USER: Ok, take your time.

ASSISTANT: Dorothy Adams, I am really sorry to inform you that there is no booking found on your name to make the changes as per your request.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for understanding. Thank you for reaching us. Have a great time.