You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I aid you today?

USER: On my name Ashley Rodriguez reserve a seat for Houston, TX - HOU to visit Galleria for my wedding shopping . So, I need your help in booking my flight ticket from Washington DC - IAD.

ASSISTANT: Sure, could you please share your price limit?

USER: 5000 is the price range of my ticket. My boarding for HOU is on 04/18.

ASSISTANT: Ok, may I know your return date?

USER: I will come back on 04/20.

ASSISTANT: Do you have any preference connections?

USER: I do not have any specific connecting.

ASSISTANT: Ok, please hold a moment, let me check the availability?

USER: Sure.

ASSISTANT: Thanks for your valuable time, sorry, unfortunately no flights matching your criterion.

USER: Ok, no issues. Thank you for assisting me.

ASSISTANT: Thanks for opting us, have a good day.