You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name please?

USER: My name is Richard Garcia.

ASSISTANT: How you doing Mr. Richard?

USER: I am doing gud.

ASSISTANT: That's good to hear. How can I help you?

USER: I need your help to book a ticket from ATL to LAS.

ASSISTANT: OK, on what dates you would like to travel?

USER: My departure date is 02/21 and return date is 02/23.

ASSISTANT: Sorry for the inconvenience, there is no flight available on your requested dates.

USER: That's really sad. Anyways thank you for the information.

ASSISTANT: Thank you for reaching us.