You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Andrew Lee.

ASSISTANT: How may I provide assistance to you?

USER: Can you please check, is there any active reservation on the name of Andrew Lee? If there is any active reservation I need to cancel my recent reservation due to cancel of my trip.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait for your response.

ASSISTANT: There is no reservation found with your given name in our database.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.