You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me in reserving the ticket from IAD to EWR?

ASSISTANT: Ok, please can I know the dates of your journey?

USER: I would like to travel on Aug 2 and again I will return back on Aug 4.

ASSISTANT: Ok, please can I know the connection limits you prefer?

USER: I am comfort to travel in single connection flight.

ASSISTANT: Ok, please can I know your other specifications?

USER: My airline preference is normal-cost.

ASSISTANT: Sorry, there are no flights available as per your specification.

USER: Not a big deal, anyhow thank you very much for your kind information.

ASSISTANT: Thank you for choosing our agency. May I know your name?