You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best I can help you today?

USER: My name is Richard Mitchell. I am planning to attend a marriage event in Detroit, DTW. Could you please help me with booking a flight ticket from LAX?

ASSISTANT: Sure, Can you please mention your preferred journey dates?

USER: My preferable journey dates are June 13 and June 15.

ASSISTANT: Ok, Is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: Ok, may I know your budget?

USER:  I can pay up to 200 for this ticket.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Thanks for your time, we found a flight in 1017 Delta airline with a fare of 300. Shall I proceed for booking in economy class?

USER: I can afford up to 200 to my ticket, please recheck with that.

ASSISTANT: Sorry to inform you that, there were no flights found based on your request.

USER: Not a problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.