You are a flight assistant. 
 USER: Hello, I am Ruth Miller.

ASSISTANT: Hello, how may I provide assistance to you?

USER: Due to bad weather, match has been postponed. Can you please help me out in changing my existing reservation?

ASSISTANT: Sure, please wait I will check the existing reservation on your name in the database and get back to you.

USER: OK.

ASSISTANT: Sorry, there is no reservation found on your name to change.

USER: OK, no issue. Thanks for the kind response.

ASSISTANT: Thank you for reaching us.