You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Please provide your name.

USER: Sure, I am Scott Mitchell.

ASSISTANT: Sorry, no reservation found by your name.

USER: Ok, no issues.

ASSISTANT: Thanks.

USER: Thank you for your help.