You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you at this moment?

USER: I need to attend client meeting at my head office located at New York, please book the ticket from Washington.

ASSISTANT: Sure, may I know your travelling dates?

USER: Yes, I would like to depart from my location on 21st Dec and I want to return back by 23rd Dec.

ASSISTANT: Ok, do you need a lay by in between the journey?

USER: Yes, it's better to search for the flights with maximum connection of 1.

ASSISTANT: Provide your airport codes.

USER: My source airport code is IAD and my destination airport code is LGA.

ASSISTANT: Can you please tell me your good name?

USER: Well, my name is Rebecca Clark.

ASSISTANT: Do you have any other preferences?

USER: Yes, I want to depart in the morning time only. Search for the flights according to that.

ASSISTANT: There are no flights found on your requested dates.

USER: So sad! Thank you for your time anyways.

ASSISTANT: Thank you for reaching us.