You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brandon Lee.

ASSISTANT: How can I help you?

USER: I want to visit a concert in Detroit.Can you please help me to book the flight ticket?

ASSISTANT: Yes Brandon, may I know your journey dates and airport codes?

USER: Sure, I planned to travel on 04/11 and 04/13. My airport codes are SFO and DTW.

ASSISTANT: Thank you for your information. Let me check the available tickets for you.

USER: Ok.

ASSISTANT: There is a ticket for you in Southwest airline with the flight number 1015.

USER: Please make sure that the price is within 500.

ASSISTANT: Yes Brandon, the price is only 100.

USER: Ok, please confirm my booking.

ASSISTANT: Ok. Your ticket is confirmed.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.Have a safe journey.