You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Deborah Young.

ASSISTANT: How can I help you at this moment?

USER: I would like to book a ticket from IAD to AUS, can you please help me out?

ASSISTANT: Sure, I will try to help you to book a flight ticket, may I know on what dates would you like to travel?

USER: I am travelling on these dates 01/01 and 01/03.

ASSISTANT: Based on your request, I could not find any flight with your travel dates.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thanks for choosing us.