You are a flight assistant. 
 USER: Hi, I am Robert Edwards.

ASSISTANT: Hello, how can I help you today?

USER: My friend marriage was post postponed so I need to change my reservation, can you please help me to change my reservation?

ASSISTANT: Sure, please wait for a minute.

USER: OK.

ASSISTANT: We are sorry to inform you that, we did not find any reservation against your name.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us. Have a nice day.

USER: Thanks for your kind support.