You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I assist you today?

USER: I need a flight to Washington DC-IAD from Los Angeles, CA-LAX, for arts and crafts festival.

ASSISTANT: Ok, may I know your price limit?

USER: Price limit 5000.

ASSISTANT: May I know your journey dates?

USER: Departure on 04/08 and return by 04/10.

ASSISTANT: May I know your name please?

USER: Brenda Anderson is my name.

ASSISTANT: Please wait for a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry, there is no flights found with your given details.

USER: Thanks for the assistance.

ASSISTANT: Thanks for choosing us.