You are a flight assistant. 
 USER: Hi, this is Alexander Young.

ASSISTANT: Hello, how can I be your helping hand?

USER: I want to cancel my recent reservation due to postpone of my exams. Can you help me in that?

ASSISTANT: Sure, please wait while I search your current reservation in our data base.

USER: Ok.

ASSISTANT: We didn't find any reservation on your name.

USER: Ok, it is not an issue. Thank you for your service.

ASSISTANT: Thank you for checking it with us.