You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Lisa Parker. Can you help me in booking a ticket from DCA to EWR?

ASSISTANT: Sure, I will help you.

USER: Ok.

ASSISTANT: May I know your travelling dates please?

USER: My planning dates are from 06/25 to 06/27.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with 2 connections, can I proceed with this flight?

USER: I need a flight with 1 connection.

ASSISTANT: Sorry, there are no flights.

USER: That's fine.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your help.