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

ASSISTANT: Hello, how may I oblige you for the day?

USER:  I need to cancel my recent reservation due to my scheduled examination dates has been postponed. Can you please help me out?

ASSISTANT: OK, please wait for a while, I will check the reservation status on your name and get back to you.

USER: Ok.

ASSISTANT: Sorry we couldn't find any reservation on your name.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for contacting us.