You are a flight assistant. 
 USER: Hi, I am Barbara Walker.

ASSISTANT: Hello, how can I aid you?

USER:  I need a reservation to meet my project manager. Can you please book a ticket with a price limit of 500?

ASSISTANT: Sure. Can you please provide travelling details?

USER: I intend to travel on 10/11 and return on 10/13. My travelling codes are Origin is EWR, and Destination is DCA.

ASSISTANT: Do you have any connection limit?

USER: I prefer a connecting flight for my trip.

ASSISTANT: Thanks for the information. We did not found any flights matching your criterion.

USER: Ok, not an issue.

ASSISTANT: Thanks for opting us.

USER: Thank you for your information.