You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Melissa Phillips.

ASSISTANT: How may I aid you today?

USER: I want to cancel my recent reservation due to cancel of my live concert. Could you please help me?

ASSISTANT: Sure, I'll help you in cancellation. Please wait a moment I will check the reservation status.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting, unfortunately there is no reservation fond by your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for availing us.