You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Brian Martinez here. Due to heavy rains cricket match was postponed, so I need to cancel my recent reservation.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT:  Sorry, there is no reservation matching with your name in our portal.

USER: That's ok, no issues.

ASSISTANT: Most welcome.