You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Joseph Moore.

ASSISTANT: How can I render you today?

USER: Can you please aid me in booking a ticket to Denver, CO-DEN to attend a family function?

ASSISTANT: Sure, we are perky to aid you. To proceed further I need your boarding airport also.

USER: My boarding is at Austin, TX-AUS.

ASSISTANT: When are you willing to travel?

USER: My travel dates are from 10/24 to 10/26.

ASSISTANT: Thanks for sharing your details.

USER: Ok.

ASSISTANT: There is no flight found to your route.

USER: Ok, thank you.

ASSISTANT: Thank you for availing us.