You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Jason Walker. I want to cancel my reservation  due to sudden change in my trip.

ASSISTANT: Ok.

USER: Can you help me?

ASSISTANT: Sure, please give me a minute.

USER: Ok.

ASSISTANT: Thank you for your valuable time. No reservation found on your name.

USER: No issue. Thank you.

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