You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Thomas Parker.

ASSISTANT: How can I assist you now?

USER: I need to go Austin to give a seminar. Please book the ticket from ATL to AUS.

ASSISTANT: Sure, I am here to help you. Can you please provide me your preferred dates of travel?

USER: I want to depart on 02/03 and return by 02/05.

ASSISTANT: Please give me a moment, I will get the flight details. Thank you for waiting.

USER: It's ok.

ASSISTANT: Sorry Thomas, there is no flight is available to you. Thank you for reaching us.

USER: Fine, thank you for your time.

ASSISTANT: You are welcome, have a good day.