You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Actually, I want to amend my reservation which is done recently due to some health issues, can you please help me in this intent?

ASSISTANT: Yes, can you share me your name?

USER: Sure, my name is Larry Edwards.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: Ok, no problem. I will try with the another booking agency.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.