You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Charles Hernandez here.

ASSISTANT: How may I guide 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 will help you. Please wait a moment.

USER: Thank you. I will wait for your reply.

ASSISTANT: Charles, your reservation has been cancelled successfully.

USER: That's great, thank you for your kind help in cancelling of my reservation.

ASSISTANT: Thank you for approaching us.

USER: Welcome.