You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Virginia Harris.

ASSISTANT: How can I aid you?

USER: I want to cancel my recent reservation due to my seminar got post pone. Can you help me in cancellation?

ASSISTANT: Sure, we are here to help you. Please give me a moment to check your details in our reservation list.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no reservation exist on the name Virginia Harris.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.