You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I render you at this moment?

USER: Please book a ticket from Dallas & Fort Worth, TX-DFW to San Francisco, CA-SFO.

ASSISTANT: Sure, may I know how much you can afford for a flight ticket?

USER: Price limit 5000.

ASSISTANT: Ok, please tell me your travelling dates?

USER: Sure. Travelling dates are from 12/04 to 12/06.

ASSISTANT: Do you need any halt in between the journey?

USER: I need halt in between the journey.

ASSISTANT: Ok, please wait for some time.

USER: Sure.

ASSISTANT: We found  Spirit airline with fare of 100 and a halt in between the journey. Shall I proceed with booking?

USER: Please book a flight.

ASSISTANT: To proceed further we need your good name please?

USER: I am Nancy Allen.

ASSISTANT: Your ticket has been confirmed with flight number 1004.

USER: Thanks.

ASSISTANT: Thank you for reaching us.