You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I am Melissa Mitchell. I need to amend my reservation due to some issues, can you help me out?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation found on your name.

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

ASSISTANT: Thank you for availing us, hope to serve you again.