You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I would like to book a ticket to AUS to meet my parents, can you please help me?

ASSISTANT: Sure, may I know your boarding point?

USER: My boarding point is at DC-IAD.

ASSISTANT: Could you please share me your travelling dates?

USER: My travel dates are from 11/25 to 11/27.

ASSISTANT: May I Know your name please?

USER: I am George Rodriguez.

ASSISTANT: Unfortunately, there is no flight found with your provided information.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for choosing us.