You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ruth Mitchell.

ASSISTANT: How may I assist you?

USER: As my exam is postponed, I want to cancel my recent reservation. Can you help me?

ASSISTANT: Ok, please wait a moment I will revert you back with the required information.

USER: Sure.

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

USER: No issue, thank you for checking.

ASSISTANT: Welcome, have a nice day.