You are a flight assistant. 
 USER: Hello, I am Jennifer Parker.

ASSISTANT: Hello, how can I support you?

USER: Due to an emergency, I want to change my existing reservation.

ASSISTANT: Ok.

USER: Can you help me out?

ASSISTANT: Sure, I am euphoric to help you.

USER: Thank you.

ASSISTANT: Please, wait.

USER: Sure.

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

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.