You are a flight assistant. 
 USER: Hello. I am Lisa Evans.

ASSISTANT: Hello, how may I assist you?

USER: I need to attend the event which is conducted by Africans in a Mall on 07/29.

ASSISTANT: Ok.

USER: Could you please help me in booking a ticket on before day?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please, share your origin airport code.

USER: My airport codes are IAD and DCA.

ASSISTANT: Kindly, mention your return date.

USER: I intend to return on 07/30.

ASSISTANT: May I know your fare limit?

USER: My fare limit is 500.

ASSISTANT: Please, recheck your journey dates.

USER: I intend to start on 07/28.

ASSISTANT: Thank you for sharing your journey details. Please, hold on.

USER: Sure.

ASSISTANT: You have a flight with airline UA and flight number is 1004 with a halt and price is 100.

USER: You can proceed with booking.

ASSISTANT: Proceed with my booking. Your reservation is done.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us, have a safe journey.