You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I need to amend my reservation due to some issue, can you help me out?

ASSISTANT: Sure, may I know your name?

USER: Myself Cynthia Collins.

ASSISTANT: Please wait for a moment to check your details.

USER: Sure, take your own time.

ASSISTANT: Sorry, no reservation found on your name in my records. Thank you for reaching us.

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