You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Jack Collins here. I need your help in booking of a flight ticket from EWR to LGA, can you please help me out with that?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Thank you for accepting my request, my departure is on 05/30 and please book my return ticket also on 06/01.

ASSISTANT: Sorry, there are no flights found in our database.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to go there. Thank you for the information.

ASSISTANT: Thank you for reaching us.