You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can I know your name?

USER: I am Justin Mitchell.

ASSISTANT: How can I serve you?

USER: My interview got postponed, so I want to cancel my recent reservation. Could you help me in cancellation?

ASSISTANT: Sure, we are here to help you. Please wait a while.

USER: Sure.

ASSISTANT: Thanks for your time. We didn't found any reservation by this name.

USER: Not an issue. Thanks for your response.

ASSISTANT: Thank you for picking us.