You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Alexander Davis.

ASSISTANT: How may I assist you today?

USER: Please cancel my recent reservation. As budget was very high for our planned trip and we are not able to arrange our budget, so can you help me with this?

ASSISTANT: Sure, I am here to help you to cancel your reservation.

USER: Thank you for accepting my request.

ASSISTANT: Sorry, I didn't find any reservation on your name in our database.

USER: That's ok, thank you for your information.

ASSISTANT: Welcome, thank you for reaching us.