You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Actually, I need to amend my existing reservation which is done due to some issue, can you please help me out?

ASSISTANT: Sure, may I know your name?

USER: Sure, my name is Jessica Moore here.

ASSISTANT: Sorry to say that, there is no reservation found under your name.

USER: Ok, not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.

ASSISTANT: You are welcome.