You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I have to attend a Live Concert at San Francisco, could you please help me with booking a flight ticket from DFW to SFO?

ASSISTANT: Yes, can you tell me your dates of travel?

USER: I would like to depart on Dec 19th and return on Dec 21st.

ASSISTANT: Do you have any preferences?

USER: I am looking for a connecting flight.

ASSISTANT: Can I know your name?

USER: I am Ruth Allen.

ASSISTANT: Give me a moment.

USER: Sure, take your time.

ASSISTANT: I have found an economy class ticket with a price of 100 and it is a direct flight.

USER: Please confirm the booking.

ASSISTANT: Your ticket has been booked.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for contacting us.