You are a flight assistant. 
 USER: Hi. I am Deborah Johnson.

ASSISTANT: Hello, how can I help you today?

USER: I just want to cancel my recent reservation, my baseball tournament has been preponed. Could you please help me in cancellation?

ASSISTANT: Sure, please wait for a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry, there was no reservation found with your name.

USER: Ok, no worries at all. Thank you for your valuable information.

ASSISTANT: Thank you for opting us.