You are a flight assistant. 
 USER: Hello, I am Mark Allen.

ASSISTANT: Hello, how may I assist you?

USER: I need to meet my younger brother and help in his annual examination on 03/15.

ASSISTANT: Ok.

USER: Will you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know your airport codes?

USER: Sure, New York, NY-EWR is my source airport code and Houston, TX-IAH is my destination airport code.

ASSISTANT: When would you like to return on?

USER: I intent to return on 03/17.

ASSISTANT: We found a flight on your details with airline Spirit, flight number: 1028. Shall I book this ticket?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your assistance.

ASSISTANT: Thank you.