You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Linda Davis.

ASSISTANT: How may I help 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: No reservation exists for cancellation.

USER: Ok, no problem.

ASSISTANT: Thanks.

USER: Thanks for your information.