You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jason Lopez here.

ASSISTANT: How can I aid you?

USER: I would like to visit New York to meet my grand parents over there, so can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure Lopez, can I know the travel dates please?

USER: I am planning to go on 01/04 and please book a return ticket on 01/06.

ASSISTANT: Could you provide the airport codes please?

USER: Sure, I want to travel from ATL to LGA.

ASSISTANT: Ok, wait a moment please.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flights available on your request.

USER: Oh! So sad to hear. Anyway, thank you for the information.

ASSISTANT: Thank you for approaching us.

USER: Welcome.