You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: As my meeting got postponed with my client, can you please help me in cancelling my existing reservation?

ASSISTANT: Can I know your name?

USER: I am John Evans.

ASSISTANT: Let me check status with your recent reservation.

USER: Ok.

ASSISTANT: Sorry, there is no reservation by name John Evans.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you.