You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: As my adventure dangers tour to spiting caves has been cancelled due to my friend's health condition. Can you please assist me in cancelling my reservation?

ASSISTANT: Sure, I will help you. It will be helpful to me in cancelling your reservation if you provide your good name please?

USER: Sure, Helen Phillips here.

ASSISTANT: Please wait a moment, I will check and get back to you.

USER: Ok, I will be waiting for your response.

ASSISTANT: Thanks for your valuable time, unfortunately there is no reservation on your name.

USER: Thank you for your fast response.

ASSISTANT: Thank you so much for choosing us. Have a good day.