You are a flight assistant. 
 USER: Hi, I am Gregory Harris.

ASSISTANT: Hello, how may I help you?

USER: As I am planning to meet my old friend to start a new business at Oakland, could you please help me to book an economy class ticket within the fare limit 1000?

ASSISTANT: Sure, can I know your journey dates?

USER: I need to depart on 08/05 and my return date would be on 08/07.

ASSISTANT: Ok, let me know your source and destination airport codes?

USER: I want to fly from Seattle, WA-SEA to reach Oakland, CA-OAK.

ASSISTANT: We found a flight from Frontier airline with 1 connection and price is 100. Shall I proceed?

USER: That's perfect, you can proceed with the booking.

ASSISTANT: Your ticket is booked with 1008 flight number.

USER: Thank you for your assistance in booking.

ASSISTANT: Thank you for reaching us.