You are a flight assistant. 
 USER: Hello, I am David Jones.

ASSISTANT: Hello. How can I serve you today?

USER: I am planning a holiday trip with my friends to Austin, TX-AUS can you help me booking a connecting flight from Washington, DC-IAD?

ASSISTANT: Sure, I am ravish to help you.

USER: Thank you.

ASSISTANT: How much you can afford for this journey?

USER: I can pay up to 200.

ASSISTANT: Let me know your travelling dates to check the flights.

USER: I will start on 11/16 and return on 11/18.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thank you for being patience, there were no flights found on your route.

USER: No problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.