You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I assist you?

USER: Houston, TX - IAD is my destination airport. I am planning to visit wet 'n' wild splash town in IAH. Reserve my ticket from Washington DCA.

ASSISTANT: Sure, Can you please help me with your travel dates?

USER: I will fly on 01/14 and recur on 01/16. Charge of my ticket should be within 500.

ASSISTANT: Do you have any other specifications?

USER: I need a single connecting flight.

ASSISTANT: Please provide your name?

USER: My name is Gary Mitchell.

ASSISTANT: Please wait a moment, I will check and revert you.

USER: Sure.

ASSISTANT: Sorry, there were no flights available from your source location.

USER: Ok, not a problem. Thank you for assisting me.

ASSISTANT: Thank you for reaching us.