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

ASSISTANT: Hello, welcome to flight booking agency. How can I guide you for today?

USER: I need a halt in between my journey, can you help me in booking?

ASSISTANT: Sure, can you please provide your preferable dates?

USER: My travelling dates are 06/28 to 06/30.

ASSISTANT: Could you please help me with your nearest source and destination airport codes?

USER: My source is LAX and destination is DCA.

ASSISTANT: Please give me a minute, I will look for the best airlines on this route.

USER: Sure.

ASSISTANT: Sorry, there is no direct flight available on this route.

USER: No issue, thank you for your time.

ASSISTANT: Thank you for availing us.