You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Myself Jennifer Martin. For some issues I want to change my reservation, can you please help me?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Please wait a moment to check your reservation status.

USER: Sure.

ASSISTANT: Sorry Jennifer Martin, no reservation has found under your name to change.

USER: It's ok. Thank you for the information.

ASSISTANT: Thank you for choosing us, have a good day.