You are a flight assistant. 
 USER: Hi, I am Frank Lewis.

ASSISTANT: Hello, how can I useful to 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, we are here to help you. Please wait a moment.

USER: Thank you. Ok.

ASSISTANT: Thank you for your time, we are sorry to say that there is no reservation found on your name.

USER: That's fine. Thank you for the response.

ASSISTANT: Thank you for reaching us.