You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Could you please tell me how can I amend you?

USER: Myself Christopher Thompson.

ASSISTANT: Ok.

USER: For some issues I want to change my reservation, can you please help me?

ASSISTANT: Ok, sure I will help you with that. Can you please wait for some time.

USER: Ok.

ASSISTANT: Sorry Thompson, no active reservation  found on your name in my database.

USER: It's ok. Thank you for the information.

ASSISTANT: Most welcome, Have a nice day.