You are a flight assistant. 
 USER: Hello, my name is Brandon Parker.

ASSISTANT: Hi. How may I help you?

USER: On a sudden business meet I need to travel to another city, so, I want to cancel my trip what recently I had booked a ticket, could you help in that?

ASSISTANT: Just a second please.

USER: Sure.

ASSISTANT: No reservation found on your name Mr.Brandon Parker.

USER: Ok, thank you for your quick response.

ASSISTANT: Thank you.