You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me with cancelling my previous reservation now?

ASSISTANT: Sure, may I know your name please?

USER: Ok, my previous booking was done with the name of Jack Lee.

ASSISTANT: Please give me a moment.

USER: I will be waiting for your reply.

ASSISTANT: There is no reservation found with your given name.

USER: Oh! That's fine, thank you for checking anyways.

ASSISTANT: Thank you for opting us.

USER: Most welcome.