You are a flight assistant. 
 USER: Hi, I am Eric Williams.

ASSISTANT: Hello, how may I aid you at this moment?

USER: I want to book a flight to Atlanta to visit Atlanta Botanical Garden, can you help me to book a flight ticket within the fare limit 200?

ASSISTANT: Sure, can you please share your corresponding airport codes?

USER: My source is CA-LAX and my destination is GA-ATL.

ASSISTANT: Sure, may I know your preferable dates of journey please?

USER: I need to depart on 04/27 and my return date will be on 04/29.

ASSISTANT: We found a connecting flight in Delta airline with a fare of 200 and the flight number is 1001. Shall I proceed?

USER: Yes, you can book the ticket.

ASSISTANT: Sure, your booking is done in economy class.

USER: Thank you for your kind service in booking.

ASSISTANT: Thank you for reaching us.