You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I am Rebecca Davis. I need to amend my reservation, can you help me out please?

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your patience, Sorry to inform you that there is no reservation found under your name.

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

ASSISTANT: Thank you for reaching us.