You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Joshua Brown.

ASSISTANT: How may I aid you?

USER: I would like to cancel my recent reservation, my baseball tournament has been preponed. Can you please help me with cancellation?

ASSISTANT: Sure, that's what I am here. Please wait for a while. I will check the reservation list and let you know.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry to notify that there was no reservation found on your name.

USER: Ok, no worries at all.

ASSISTANT: Thank you for picking us.

USER: Thank you.

ASSISTANT: Have a nice day.