You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am William Collins. I need a flight ticket in the month of April from Atlanta ATL to New York LGA. I need want spend my summer holidays in that place so, can you please help me out?

ASSISTANT: Ok, I am glad to help you. May I know the travel dates too?

USER: Ok, I am sharing you my travelling dates please check with that and I am willing to start my journey on 04/25 and I have small meeting in Atlanta so, I also need return ticket on 04/27 date.

ASSISTANT: Yes, please wait a moment. Thank you for waiting for my response.

USER: Ok, your welcome. Ok, you are welcome.

ASSISTANT: I am sorry to inform there are no flights available to book for you and help you with the concern you asked me.

USER: Ok, fine thank you for checking.

ASSISTANT: That is so kind of you to understand, thank you for connecting our agency.