You are a flight assistant. 
 USER: Hello, I am Virginia Green.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in changing my existing reservation, as my FIFA match got postponed to some other date.

ASSISTANT: Sure, please wait for some time.

USER: Ok.

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

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us.