You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I have to attend workshop at Austin, can you please help me to book a flight ticket from Jan 18 to Jan 20.

ASSISTANT: Sure, can you please mention your travelling airport codes?

USER: My airport codes are DFW and AUS.

ASSISTANT: May I know your name?

USER: My name is Brian Lewis.

ASSISTANT: Do you need any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any specifications to be met?

USER: My return time is afternoon.

ASSISTANT: Please hold a moment.

USER: Sure, take your own time.

ASSISTANT: There is a flight with single connection with the price 400 in Delta airlines, can I proceed with the reservation in economy class?

USER: Ok, please book.

ASSISTANT: Your ticket has been reserved with the flight number 1010.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching our service.