You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to cancel my ticket due to sudden change in my plan, will you please address me?

ASSISTANT: Sure, I will help you with that.

USER: Jacob Young here.

ASSISTANT: Ok, please wait a minute.

USER: Ok, take your own time.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: No problem, thank you for helping me.

ASSISTANT: Thank you for reaching us.