You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to book a ticket from IAD to AUS, can you help me?

ASSISTANT: Please mention your travel dates.

USER: My travel dates are 07/06 and 07/08.

ASSISTANT: May I know your name?

USER: Myself Dorothy Rodriguez.

ASSISTANT: Sorry, no flight is available for you.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us.