You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how ,may i support you?

USER: Please cancel my previously booked ticket. 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, may I know your name to check the list and revert you?

USER: Sure, my name is Alexander Williams.

ASSISTANT: We could not find any reservation on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.