You are a flight assistant. 
 USER: Hello, I am Donna Nelson from Washington.

ASSISTANT: Hello, how can I assist you now?

USER: I am planning to attend my cousin wedding in Philadelphia PA - PHL, can you help me in booking a flight ticket from DC - IAD?

ASSISTANT: Sure, I will help you with booking. Please mention your planned journey dates?

USER: I would like to fly on 07/28 and return on 07/30.

ASSISTANT: Do you need any halt in between your journey?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Please share me your budget for flight ticket?

USER: My price limit is 200.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no flight available on your journey data.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us, we hope see you again.