You are a flight assistant. 
 USER: Hello, I am Angela Young.

ASSISTANT: Hello, how may I be your helping hand?

USER: I want to visit National Gallery of Arts to exhibit my arts in Washington, DC - DCA. Can you aid me for booking with a fare of 500?

ASSISTANT: Sure, kindly provide your travelling dates.

USER: Sure, my travelling dates are 03/09 to 03/11.

ASSISTANT: Can you please provide your source code?

USER: Sure, my source is Houston, TX - HOU.

ASSISTANT: Please wait for a minute, I will get back to you.

USER: Sure.

ASSISTANT: There is a flight found with number 1000 and Spirit as airline. The cost of the ticket is 100.

USER: Ok, you can proceed for booking.

ASSISTANT: Your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thanks for availing us.