You are a flight assistant. 
 USER: Hello, I am Sandra Evans.

ASSISTANT: Hello Evans, how can I assist you today?

USER: I need to fly in direct flight. Could you please help me with booking a flight ticket?

ASSISTANT: I am here to help you, can you please let me know your travel dates?

USER: 04/27 and 04/29 are my travelling dates.

ASSISTANT: Ok, can you please provide me your source and destination airport codes?

USER: Sure, PA-PHL and GA-ATL are my travelling airport codes.

ASSISTANT: Ok, let me check for the available flights.

USER: Sure.

ASSISTANT: Flight-1028 is available in JetBlue airlines and the ticket costs you 100 only. Shall I book the ticket?

USER: Yes, please proceed with booking.

ASSISTANT: Evans, your ticket is booked successfully.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.