You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: Can you please help me in cancel my recent reservation?

ASSISTANT: Sure, could I have your name please?

USER: Jack Williams.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

ASSISTANT: I have found your reservation and I cancelled it.

USER: Thank you.

ASSISTANT: You are welcome.