You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Benjamin Hall.

ASSISTANT: What type of service do you need from us?

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

ASSISTANT: Sure, please hold on for a minute.

USER: Ok.

ASSISTANT: I will check your ticket status and let you know.

USER: Ok.

ASSISTANT: Sorry for the trouble, there is no reservation found with your name.

USER: No issue. Thank you.

ASSISTANT: You are most welcome. Thank you for reaching us.