You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I aid you?

USER: I am Joshua Martinez. I need to fly from DCA to IAH to meet my friend, can you please book a flight ticket?

ASSISTANT: Could you provide me your travelling dates?

USER: My journey dates are 02/04 to 02/06.

ASSISTANT: Do you have any preference?

USER: My price is 200. I need a halt.

ASSISTANT: We found a connecting flight AA with flight number 1015 and fare is 100.

USER: Please proceed with my booking.

ASSISTANT:  Your booking is confirmed.

USER: Thank you for your help.

ASSISTANT:  Thank you for opting us.