You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Actually I planned to meet my project manager, but due to some other important meeting's he is unable to meet me on the planned dates, so can you cancel my recent reservation?

ASSISTANT: Sure, I will help you with that. Can you please provide me your name to search your recent reservation?

USER: Sure, I am Gregory Walker.

ASSISTANT: Very sorry to inform you that, there is no reservation found with your name in our database.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.

ASSISTANT: It's my pleasure.