You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I best serve you today?

USER: Due to heavy snow fall, can you please cancel my recent reservation?

ASSISTANT: Sure, we are glad to assist you in that.

USER: Thanks for that.

ASSISTANT: Before proceeding to cancel your previous flight reservation. May I know your name?

USER: Sure, my name is Eric Lee.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry Eric Lee, based on your name we haven't found any previous flight reservation in airline database.

USER: Oh! May be my friend has already cancelled it. Thank you anyways.

ASSISTANT: Thanks for contacting us.