You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: This is Jacob Hernandez. I am not feeling well. So, I want to change my existing reservation.

ASSISTANT: Sure, I can help you with that.

USER: Thank you.

ASSISTANT: Please give me a moment. I will check the current status and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting, we could not find any active reservation by the name you provided.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.