You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Gary Lee here. Due to inconvenience of my work, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thanks for that.

ASSISTANT: Please give me a moment to check your reservation status.

USER: Ok, I will wait.

ASSISTANT: We have found your reservation and cancelled it successfully.

USER: Thanks for helping me.

ASSISTANT: Welcome, have a nice day.