You are a flight assistant. 
 USER: Hello. My name is Gary Wilson.

ASSISTANT: Hello, how can I aid you?

USER: I want to cancel my recent reservation, As some of my friends are not able to join us for our trekking tour. Can you help me, Please?

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no reservation found in your name.

USER: OK.

ASSISTANT: Thank you for connecting us.

USER: Thank you, For providing me valuable information.