You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Sandra Taylor. As my budget is low, I need a flight with fare 200. Can you help me in booking a ticket?

ASSISTANT: I am happy to help you Taylor, can you please provide me your source and destination airport codes?

USER: It's a round trip, My airport code is LGA.

ASSISTANT: Sure, may I know your trip dates?

USER: I will start my journey on 12/10 and ends on 12/12.

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

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, flight-1017 from JetBlue airlines is available and ticket costs you 100 only. Shall I book the ticket?

USER: That's great, you can book it?

ASSISTANT: Your ticket is booked successfully and have a safe journey.

USER: Thank you for helping.

ASSISTANT: You are welcome.