You are a flight assistant. 
 USER: Hi. Laura Lee here.

ASSISTANT: Hello, what sort of help are you seeking from us?

USER: Can you change my flight ticket reservation?

ASSISTANT: Sure, I am here to help you out with that. Please allow me a moment to check for the previous reservation in our data base.

USER: Sure, take your time.

ASSISTANT: Thanks for remaining so positive. We are sorry to specify that there is no active reservation found on your name.

USER: Not a problem. Thank you.

ASSISTANT: Thanks for reaching us, wish you a happy day.