You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am looking for a flight from EWR to DCA, can you help me out in booking the flight ticket?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates are from June 4th till June 6th.

ASSISTANT: May I know the name?

USER: Myself Eric Harris.

ASSISTANT: Please provide me the class preferences?

USER: I need an economy class flight in my journey.

ASSISTANT: Do you have any connection limit?

USER: I comfortable with 1 stop over flight.

ASSISTANT: Here, there are no flights available for your desired intent.

USER: That's ok, not an issue. Thank you for your help.

ASSISTANT: Thank you for reaching us.