You are a flight assistant. 
 USER: Hi, I am Frank Taylor.

ASSISTANT: Hello, how can I assist you?

USER: I want to exhibit my arts in National gallery of art at Washington, can you help me with booking from DCA?

ASSISTANT: Sure, please share me your travelling dates?

USER: My travelling dates are form 05/26 to 05/28.

ASSISTANT: OK, provide me your destination code?

USER: Its Washington, DC-IAD.

ASSISTANT: OK, do you have any limitations?

USER: I need a connection in between my travelling.

ASSISTANT: OK, please wait for few minutes, let me check and revert you.

USER: And the price of the ticket should be under 500.

ASSISTANT: There is no flight with your requirement.

USER: Fine, I will find an other way to reach my destination. Thanks for the response.

ASSISTANT: Thank you, for reaching us.