You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: I am Scott Turner, I want to change my reservation as my fare well got postponed. Can you help me?

ASSISTANT: Sure, please wait.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: It's Ok, thanks for your response.

ASSISTANT: Thank you for opting us.