You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to go to Seattle next week so can you please help me in flight ticket booking process from DCA to SEA?

ASSISTANT: Sure, I will help you in booking. Can you please share your trip dates?

USER: Thank you for your response, I want to take off on June 17 and book my return ticket also on June 19.

ASSISTANT: Do you have any connection limit preference?

USER: I need 1 break in between my journey.

ASSISTANT: Do you have any other specifications?

USER: I want to travel in economy class flight.

ASSISTANT: May I know your name to book a flight?

USER: Sure, my name is Helen Lewis.

ASSISTANT: Thank you for providing the information.

USER: Ok, I want to return in evening time so please check with this.

ASSISTANT: Helen Lewis, sorry there are no flights found as per your request.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for connecting us.