You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Justin Campbell here.

ASSISTANT: How may I help you?

USER: Can you please help me in cancelling my recent reservation? As I have an important meeting to attend on my trip dates.

ASSISTANT: Sure, wait a moment.

USER: Ok, I'll be online.

ASSISTANT: Thanks for your patience, there is no reservation found under your name to cancel it.

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank for choosing us, have a good day.