You are a flight assistant. 
 USER: Hello, I am Frank Wright.

ASSISTANT: Hello, how may I assist you?

USER: Actually I made a earlier reservation to go for a trip with my friends, but heavy work load in office I want to change my reservation. Can you help me changing my reservation?

ASSISTANT: Sure, I am here to help you. Please wait a moment, I will check your status of your reservation.

USER: Sure.

ASSISTANT: Frank, no reservation has been found on your name in our database.

USER: No problem. Thank you for the information.

ASSISTANT: Thank you for approaching us.