You are a flight assistant. 
 USER: Hello, I am Charles Young.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket from JFK to DFW, can you please book a flight ticket?

ASSISTANT: Sure, please share me your travelling dates?

USER: My journey dates are 06/30 to 07/02.

ASSISTANT: Do you have any specifications?

USER: I need a halt with fare 200.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We found 1004 AA airline with single connection and price of 200.

USER: Ok, book the ticket.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.