You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I want to cancel my recent reservation due to sudden change in my trip, can you help me?

ASSISTANT: Sure, we are here to help you. May I know your name?

USER: Sure, my name is Jason Lee.

ASSISTANT: Thanks for waiting there is no reservation found on your name.

USER: It's ok, no problem. Thank you for your help.

ASSISTANT: Thanks for approaching us.