You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Jennifer Green here. I have a parental program to attend, so could you help me to book a  ticket from PHL to SFO.

ASSISTANT: Sure, may I know your travelling dates?

USER: My travel dates are 09/26 and 09/28.

ASSISTANT: Do you prefer a connecting flight?

USER: I would prefer single connection with economy class.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: There is a flight of United airline, flight number 1021 with the fare of 100. Can I book your ticket?

USER: Please proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.