You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I would like to change my flight reservation as my mother is unwell, please help me.

ASSISTANT: Sure, I am happy to help you. Can you please let me know your good name?

USER: Thank you. I am Melissa Carter.

ASSISTANT: Sorry, there is no active reservation on your name in our records.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for opting us.