You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Charles Martinez.

ASSISTANT: How may I abet you today?

USER: Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, can you please wait a moment, let me check with the details in our database.

USER: Ok.

ASSISTANT: Sorry, there are no active reservations to cancel on your given name.

USER: Not a problem, thank you.

ASSISTANT: Thank you for reaching our service.