You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: I am Carol Phillips want to visit Austin, can you book a ticket from ORD to AUS?

ASSISTANT: Sure, may I know your dates of journey please?

USER: Sure, my travelling dates will be 06/20 and 06/22.

ASSISTANT: Sorry Phillips, there is no flight found as per your travelling details.

USER: That's ok, thank you.

ASSISTANT: You are welcome.