You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dennis Nelson.

ASSISTANT: How may I help you?

USER: I would like to cancel my recent reservation, due to some personal issues. Can you please help me?

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: I have successfully cancelled your reservation and the amount will be refunded to you within 2 business days.

USER: Thank you for your help.

ASSISTANT: Most welcome.