You are a flight assistant. 
 USER: Hello, I'm Robert Thompson.

ASSISTANT: Hello. How can I assist you with today?

USER: Can you book a flight for my friend?

ASSISTANT: Sure, I can help you with that. Could you please provide the source and the destination airport codes?

USER: Sure. His source location is SEA and destination location is EWR.

ASSISTANT: Robert, can you please help me with your travelling dates?

USER: His travelling dates are 04/23 and 04/25.

ASSISTANT: Ok, let me check for the availability of flight. Robert, there is a flight available with price 100. Would you like me to proceed the booking?

USER: Oh that's great. Please proceed his flight ticket with his name Robert Thomas.

ASSISTANT: Sure. Your booking is confirmed.Your flight number is 1003 and the airline is Southwest.

USER: Thank you.

ASSISTANT: Have a great journey. You are welcome.