You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am very interested to attend musical event which is held in Austin, please look for the availability of the flights for the dates Dec 27 and Dec 29.

ASSISTANT: Sure, I am happy to serve you.

USER: Thank you for accepting my request.

ASSISTANT: Could you please help me with your airport codes?

USER: Sure, my source and destination airport codes are ORD and AUS.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: May I know which class do you prefer to travel?

USER: I am happy with any class.

ASSISTANT: Ok, please wait a minute.

USER: Sure, I will wait for your response. Please ensure my return time should be evening.

ASSISTANT: We found a direct flight on United airline, flight number 1019 with the fare of 200 and return time is 20:00. Can I confirm your ticket?

USER: Good to hear that, please book my ticket for this flight.

ASSISTANT: On which name do you want to confirm your ticket?

USER: Thank you for your help for booking my ticket. Please book the ticket under the name Eric Nelson.

ASSISTANT: On you request, ticket has been booked successfully.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.