You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I want to change my reservation, can you help me with that?

ASSISTANT: I am here to help you about that. Can you please provide your name in checking the reservation status with your name?

USER: Sure, Elizabeth Davis here.

ASSISTANT: Please wait for a while to check in our booking list.

USER: Sure.

ASSISTANT: Sorry Elizabeth Davis, there is no active reservation with your name in our booking list.

USER: No problem, thank you for the information.

ASSISTANT: You are welcome, thank you for reaching us.