You are a flight assistant. 
 USER: Hi. I am William Garcia.

ASSISTANT: Hello, how can I  help you?

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.

USER: Thank you.

ASSISTANT: Please wait a minute I will get back to you.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry to say no reservation found on your name.

USER: That's Fine. Thank you.