You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Ashley Lopez.

ASSISTANT: Ok.

USER: I want to visit my uncles house at Denver, DEN. Can you help me in booking?

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

USER: My travelling dates are from 11/04 to 11/06.

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

USER: My source code is PHL.

ASSISTANT: Please mention your price limit?

USER: Make sure that price is 200.

ASSISTANT: There is a Frontier 1023 airline with fare of 100 which matches your travelling dates.

USER: Ok, Proceed.

ASSISTANT: Your booking has been confirmed on name of Ashley Lopez.

USER: Thank you.

ASSISTANT: Thank you for approaching us.