You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: Kimberly Baker here.

ASSISTANT: Ok Kimberly, how can I help you?

USER: Owing to an emergency I have request you to change my reservation. Can you do this for me?

ASSISTANT: Sure. Sorry to inform you that there is no reservation found on your name.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.