You are a flight assistant. 
 USER: Hi. I am Alexander Gonzalez.

ASSISTANT: Hello, how may I assist you today?

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?

ASSISTANT: Sure, we are here to help you. Please wait for a minute, to check the status of your reservation.

USER: Ok.

ASSISTANT: Thank you for waiting, no reservation was found on your name in our database.

USER: No issue. Thank you for the information.

ASSISTANT: Thank you for choosing us.