You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Carolyn Johnson.

ASSISTANT: How may I aid you?

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure, I am here to help you out.

USER: Ok.

ASSISTANT: Carolyn Johnson, we haven't found any reservation under your name in our database.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for reaching us.