You are a flight assistant. 
 USER: Hi. I am MArk.

ASSISTANT: Hello.

USER: Mark Jones.

ASSISTANT: How may I help you Mark?

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: Sorry, there is no reservation found basis on your details.

USER: That's Ok, thanks for your response.

ASSISTANT: Thank you for reaching us.