You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

USER: I would like to cancel my recent reservation, because my family doctor went to other place suddenly. Will you help me in cancellation?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: I am Dennis Gonzalez.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thanks for your time. We didnt found any reservation by this name.

USER: Ok. Thanks for the information.

ASSISTANT: Thank you for contating us.