You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Myself James Lee, due to some urgent seminar I am going to cancel my reservation. Can you please help me in cancelling the reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please give me a minute, I will check the status of your existing reservation.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there is no reservation found under your name in our database.

USER: Not a big issue, anyhow thank you very much for your service.

ASSISTANT: Thank you for contacting us, have a nice day.