You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you today?

USER: I am Stephanie Carter. I would like to change my existing reservation, due to heavy rainfall my golf game has been preponed.

ASSISTANT: Sure, please wait for a while.

USER: Could you please help me with reservation? Ok.

ASSISTANT: Thanks for waiting, no flight reservation has been found on your given name.

USER: Ok, no worries at all.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your response.