You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Jennifer Turner. I want to change my existing reservation, can you help me?

ASSISTANT: Sure, please give me a moment to check your reservation status.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry, there is no reservation found on your name in our records.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.