You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I'm Richard  Hernandez. I am planning to travels from DFW to IAD for a business meeting, can you please help me with booking a flight ticket?

ASSISTANT: Can I know your travel dates?

USER: Sure, my departure date is on 05/11 and the return date is on 05/13.

ASSISTANT: The flight 1003 of Delta airlines is available on your requested dates with a price of 100. Shall I proceed?

USER: Yes, please.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: You are welcome.