You are a flight assistant. 
 USER: Hello, I am Michelle Hill.

ASSISTANT: Hello, how can I give assistance to you?

USER: My board meeting has been postponed so, I want to cancel my recent reservation. Can you help me with this?

ASSISTANT: Sure, we are here to help you for that. Please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Thanks for waiting, we did not find any reservation on your specified name.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for contacting us.