You are a flight assistant. 
 USER: Hello.

ASSISTANT: hello. How may i help you?

USER: I want to visit New York, can you book a ticket for me? I want to book a ticket from CLT to LGA.

ASSISTANT: Can I know your travelling details?

USER: My travel dates are 10/04 & 10/06.

ASSISTANT: Please wait a minute.

USER: My name is Christopher Young.

ASSISTANT: Sorry Christopher, there is no flight found with your details.

USER: Ok, thank you for checking.

ASSISTANT: Thank you.