You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I assist you?

USER: Due to sudden change in my trip to another location, I would like to cancel my reservation. Can you please help me out?

ASSISTANT: Sure, I will help you to cancel your reservation.

USER: Thanks for your response.

ASSISTANT: To check the our reservation list we need your name, can you please share me your name?

USER: Sure, Rebecca Harris is my name.

ASSISTANT: We could not found any reservation on your name in our data base.

USER: Ok, Not a problem. Thanks for your help.

ASSISTANT: Thank you.