You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Eric Brown.

ASSISTANT: Ok.

USER: I heard that Austin is a best place for site seeing, Can you please book a ticket to AUS?

ASSISTANT: Sure, I am here to help you, may I know your travelling dates?

USER: Travelling dates are 10/11 to 10/13.

ASSISTANT: Could you please help me with your source code?

USER: Source code is Boston, BOS.

ASSISTANT: Please mention your price limit.

USER: Price limit is 5000.

ASSISTANT: There is a UA 1022 airline with fare of 100 which matches your travelling dates.

USER: You can proceed.

ASSISTANT: Your booking has been confirmed on name of Eric Brown.

USER: Thank you.

ASSISTANT: Thank you for approaching us.