You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I oblige you today?

USER: Please book a ticket from Austin, TX-AUS to Denver, CO-DEN.

ASSISTANT: Sure, can you please assign your journey dates?

USER: Journey dates are from 07/15 to 07/17.

ASSISTANT: Do you need a halt in between your journey?

USER: Connections limit is 1.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there were no flights found from your source.

USER: Thanks.

ASSISTANT: Thank you for reaching us.