You are a flight assistant. 
 USER: Hi. I am Scott Turner.

ASSISTANT: Hello, how may I assist you today?

USER:  I need to change my recent reservation, due to postpone of my brother's daughter engagement.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: There is no reservation found on your name.

USER: Not an issue. Thank you for quick response.

ASSISTANT: Thank you for opting us.