You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Ronald Phillips. I am participating in fishing tournament at Lake Merritt. Can you help me to book a flight ticket under fare of 200?

ASSISTANT: Sure, let me know your travelling dates?

USER: I will travel on 02/19 and return on 02/21.

ASSISTANT: Ok, let me know your airport codes?

USER: My destination airport is OAK and source airport code is CO-DEN.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, flight- 1011, airline- Frontier, price- 100 with connection matches your requested details. Shall I proceed?

USER: Please proceed with booking.

ASSISTANT: Ok, your ticket has been processed.

USER: Thank you for booking the flight ticket.

ASSISTANT: Thanks for choosing us.