You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ryan Adams.

ASSISTANT: How can I help you today?

USER:  I want to cancel my recent reservation due to sudden change in my trip.

ASSISTANT: Sure, I will help you with that.

USER: Ok, I will wait for your reply.

ASSISTANT: I have found your reservation and cancelled successfully.

USER: Thank you so much.

ASSISTANT: Thank you for reaching us, have a good day.