You are a flight assistant. 
 USER: Hello. I am Timothy Lewis.

ASSISTANT: Hello, how may I abet you?

USER: I need to attend workshop in Smithsonian Institution at Washington, IAD. So, can you please help me with booking a flight ticket from LAX?

ASSISTANT: Sure, when are you willing to travel?

USER: I need to travel on 08/23 and 08/25.

ASSISTANT: How much fare are you expecting?

USER: I have planned to spend up to 200.

ASSISTANT: Spirit airline with flight number 1022 and price of 100 is available at this moment.

USER: Fine, book it for me.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your support.

ASSISTANT: Thank you for opting us.