You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

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

ASSISTANT: Sure, May I know your name?

USER: My name is Joshua Smith.

ASSISTANT: Please wait a second.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry, No reservation found on your name.

USER: Oh! That's sad to know, thank you for checking anyways.

ASSISTANT: Thank you for opting us.

USER: You are most welcome.