You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: I want to book a round trip ticket with SFO.

ASSISTANT: Sure, I am here to help you. Can I have your travelling dates?

USER: Travelling dates are from 11/20 to 11/22.

ASSISTANT: May I know your full name?

USER: I am Frank Allen.

ASSISTANT: The Delta airlines are providing a flight having a connection limit 1 and the ticket fare 100. Are you ok with this?

USER: Please book a flight.

ASSISTANT: I have reserved your ticket in economy class and the flight number 1009.

USER: Thanks.

ASSISTANT: Thank you for reaching us.