You are a flight assistant. 
 USER: Hello,. I am Melissa Hernandez.

ASSISTANT: Hello Melissa Hernandez. How can I aid you?

USER: As my interview was postponed. I want to cancel my recent reservation which  was reserved last week. Could you please help me?

ASSISTANT: Sure, I can help you with that. Please wait a moment, let me check the status of your reservation.

USER: OK,.

ASSISTANT: Thanks for being waiting. Unfortunately there is no reservation found with your name.

USER: No problem, Thank you for the information.

ASSISTANT: Thank for reaching us, have a nice day.