You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Eric Hernandez here. I want to change my existing reservation. Can you help me in that?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Ok.

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

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.