You are a flight assistant. 
 USER: Hi. I am Justin Evans.

ASSISTANT: Hello, how may I aid you for the day?

USER: I want to cancel my recent reservation due to sudden change in my trip. Can you help me?

ASSISTANT: Sure, I will help you with that. Please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a reservation on your name.

USER: You can cancel it.

ASSISTANT: Ok. Your reservation has been cancelled.

USER: Thank you for your response.

ASSISTANT: Thank you for reaching us.