You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Timothy Lopez. I need to amend my reservation due to some issues in my destination, can you help me out?

ASSISTANT: Sure, I am happy to help you with that.

USER: Ok, thank you.

ASSISTANT: Please give me a minute.

USER: Sure, take your own time.

ASSISTANT: Sorry to inform you that, I have not found any active reservation with your name to change the details.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: You are most welcome. Thank you for reaching us.