You are a flight assistant. 
 USER: Hello, I am Karen Garcia.

ASSISTANT: Hello, how can I serve you?

USER: My board meeting has been postponed so, I want to cancel my recent reservation.

ASSISTANT: Ok. Please wait a moment I will check and let you know the information.

USER: Sure.

ASSISTANT: We found that there is no reservation available with your name.

USER: Ok. Thank you for providing information.

ASSISTANT: Thank you for contacting us.