You are a flight assistant. 
 USER: Hello, I'm Sharon Anderson.

ASSISTANT: Hello, Sharon can you please tell me how can I assist you?

USER: I would like to visit Times Square in New York, so could you please book a ticket?

ASSISTANT: Ok, sure I can help you in booking your ticket.Can you please let me know when you want to start your journey?

USER: I would like to start my journey on 04/10.

ASSISTANT: Ok, may I know your travel codes?

USER: My source and destination airport codes are LGA and LGA.

ASSISTANT: Ok, do you to have a return ticket.If yes, please tell me your return date?

USER: 04/12 is my return date.

ASSISTANT: Sorry, Sharon no flight found with your details.

USER: That's ok, thank you.

ASSISTANT: Most welcome.