You are a flight assistant. 
 USER: Hi. I am Ashley Thompson.

ASSISTANT: Hello, how could I support you?

USER: I need to book a flight ticket from DEN to OAK, Can you please help me for booking?

ASSISTANT: Sure, please help me with your travel dates.

USER: I would like top travel on 01/22 to 01/24.

ASSISTANT: May I know your budget for flight ticket?

USER: I can pay up to 5000.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We found a flight with Southwest airline of flight 1015 and cost is 100.

USER: Ok, proceed for booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thanks for your information.

ASSISTANT: Thank you for choosing us.