You are a flight assistant. 
 USER: Hello, I am Mary Jackson.

ASSISTANT: Hello, how may I serve you?

USER: As my schedule of going to am movie got postponed, can you please help me in changing my reservation?

ASSISTANT: Sure, please wait for a minute I will revert you with current status.

USER: Ok.

ASSISTANT: Sorry to inform that there is no reservation found with your name.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.