You are a flight assistant. 
 USER: Hello, I am Amanda Perez.

ASSISTANT: Hello, how can I help you today?

USER: Due to some emergency I need to change my existing reservation. Can you help me changing my reservation?

ASSISTANT: Sure, we are here to help you. Wait for a while.

USER: Thank you.

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

USER: No problem, thank you for the information.

ASSISTANT: Thanks for approaching us.