You are a flight assistant. 
 USER: Hi, my name is Cynthia Hall.

ASSISTANT: Hello. How can I aid you?

USER: I want to book a connecting flight to DTW, can you help me with booking?

ASSISTANT:  Sure, Do you have any price limit?

USER: It should not exceed 200.

ASSISTANT: Please provide me your source code.

USER: My source is AUS.

ASSISTANT: May I know your travelling dates?

USER: I will start on 06/13 and end on 06/15.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thanks for being waiting. We found a UA airline,flight number:1027 and the price is 100.

USER: Ok, you can proceed with this booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.