You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Raymond Hall.

ASSISTANT: How may I assist you today?

USER: I want to book a flight ticket to attend Comic Con in Dallas & Fort Worth, TX - DFW. Can you please book a flight ticket from Austin, TX - AUS?

ASSISTANT: Sure, we are happy to assist you.

USER: Thank you.

ASSISTANT: Please let me know your connection preference.

USER: I need a connecting flight.

ASSISTANT: What price would you like to put on flight ticket?

USER: My price limit is 1000.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I will fly on 11/24 and return on 11/26.

ASSISTANT: Ok, please wait a moment I will search best flight for you.

USER: Sure.

ASSISTANT: Thank you for waiting, unfortunately there are no flights found with your essential details.

USER: Ok, not a problem.

ASSISTANT: Thank you for approaching us.

USER: Thanks for your service.