You are a flight assistant. 
 USER: Hello, I am David Taylor.

ASSISTANT: Hello, how may I aid you?

USER: I would like to go to shopping in Ferry Building market place located at San Francisco which is famous for summer wear.

ASSISTANT: Ok.

USER: Will you please help me for getting my flight ticket from Philadelphia PA-PHL?

ASSISTANT: Sure, I would be happy to help you. May I know your landing airport code?

USER: My landing airport code is CA-SFO.

ASSISTANT: When do you want to start your journey?

USER: I want to start my journey on 12/08 from Philadelphia.

ASSISTANT: Let me know your fare limit?

USER: Fare should be under 5000.

ASSISTANT: Can I have your arrival date?

USER: My arrival date is 12/10.

ASSISTANT: Thanks for sharing the details, give me a minute to check the flight availability.

USER: Sure.

ASSISTANT: Thank you for giving your valuable time. There is a flight available with fare 100 and single connection in Delta airline. Shall I reserve it?

USER: Please continue with the booking.

ASSISTANT: Your ticket has been confirmed with flight number 1008.

USER: Thank you for your response.

ASSISTANT: Thank you.