You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I serve you?

USER: I want to book a flight ticket for my friend to attend my bio exhibition at Washington. Can you help me in booking a flight ticket with the price range of 200?

ASSISTANT: Surely, I will hep you. May I know the price limit and travelling details?

USER: I will fly on 10/08 and recur on 10/10. My airport codes are CLT - DCA.

ASSISTANT: Sorry, May I know your name?

USER: My friends name is Shirley Davis.

ASSISTANT: Frontier airline with 1005 flight number is available.

USER: You can book my ticket.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your information.

ASSISTANT: Thank you, Have a safe journey.