You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you at this moment?

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

ASSISTANT: Sure, may I know your travelling dates?

USER: I would like to travel on July 4 and again I will return back on July 6.

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

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

ASSISTANT: Do you have any other preferences?

USER: I want travel in business class.

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

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

ASSISTANT: May I know your good name please?

USER: Myself Frank Hall.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.