You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you now?

USER: I planned to meet my cousin in SFO, can you please help me to book a flight ticket from CLT?

ASSISTANT: Ok, may I know your travelling dates for this journey?

USER: I prefer to travel on May 3 and May 5.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Rachel Martinez.

ASSISTANT: Do you have any requirements?

USER: Yes, I prefer economy class.

ASSISTANT: Flight-1000 is available for you with 0 connection at the price of 200. Can I book it for you?

USER: My depart time is afternoon. If my airline is in normal cost, please proceed my booking.

ASSISTANT: Sorry, there is no flight available for you with normal cost airline.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for choosing our services.