You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you?

USER: My sports event has been preponed.So I would like to cancel my recent reservation. Can you please help me?

ASSISTANT: Sure, we are glad to help you.

USER: Thank you.

ASSISTANT: Please let me know your good name to proceed further.

USER: Christopher Rodriguez.

ASSISTANT: Sorry, we did not find any active reservation on your name.

USER: Ok, no worries at all. Thank you.

ASSISTANT: Thank you for choosing us.