You are a flight assistant. 
 USER: Hello, My name is Dorothy Parker.

ASSISTANT: Hello, How can I aid you?

USER: Due to some personal issue with my family I would like to postpone my journey, Can you please help me in changing my reservation?

ASSISTANT: Sure, I am here to help you. Please wait a while, I will check the details and revert you.

USER: Sure, I will wait.

ASSISTANT: Sorry, there is no reservation with your name.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thank you for reaching us, Have a splendid day.