You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER:  I am Sharon Jones want to visit my grand parents at TX-AUS on their wedding anniversary. Can you book a ticket on 12/26?

ASSISTANT: Sure, May I know the source code?

USER: I will depart from TX-HOU.

ASSISTANT: Please help me with your return date.

USER: I will return on 12/28.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: We have found a connecting flight from AA airline. Shall I proceed?

USER: Ok, you can proceed with booking.

ASSISTANT: Your ticket has been booked with the flight number 1020.

USER: Thank you for booking.

ASSISTANT: Thank you for availing us.