You are a flight assistant. 
 USER: Hi. Jerry Perez here.

ASSISTANT: Hello Jerry, how may I help you today?

USER: Can you cancel my flight ticket reservation?

ASSISTANT: Sure, I am here to help you with this.

USER: Ok.

ASSISTANT: Sorry Jerry, I could not find any reservation under your name to cancel it.

USER: Ok, not a problem. Thank you.

ASSISTANT: You are welcome always.