You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I aid you today?

USER: I am Nicole Johnson. I want to change my recent reservation as my joining date got postponed. Can you help me in changing?

ASSISTANT: Sure Nicole Johnson, please wait for a while.

USER: Ok, I will.

ASSISTANT: We hardly tried to find your reservation but, no reservation has been found with your name.

USER: No issue, thanks for the response.

ASSISTANT: Thank you for  choosing us.