You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER:  I want a ticket to AUS, going Austin to hangout with the friends, to get free from work pressure, can you please book a ticket from DFW?

ASSISTANT: That's great to hear. I will help you with booking. Please provide me your travel dates too.

USER: Thanks for helping. My travel dates are 12/28 and 12/30.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your patience. Can you please provide me your good name?

USER: I am Thomas Williams.

ASSISTANT: Sorry, no flight has matched with your dates. Thank you for reaching us.

USER: It's ok. Welcome.

ASSISTANT: Have a good day.