You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you for the day?

USER: I am Stephanie Clark. I want to book a cheaper flight ticket within 200. Can you help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When you are willing to travel?

USER: 12/25 and 12/27 are my travelling dates.

ASSISTANT: Can you help me with your airport codes?

USER: DEN and DTW are my airport codes.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: We found 1021 UA airlines with single connection with price 100.

USER: You can reserve it.

ASSISTANT: Your, booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.