You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Charles Baker.

ASSISTANT: How can I help you at this moment?

USER: I would like to book a ticket from JFK to OAK, can you please help me out?

ASSISTANT: Sure, I am here to help you with this.

USER: Thank you.

ASSISTANT: May I know your preferable travel dates, please?

USER: I am travelling on these dates Jan 29th and 31st.

ASSISTANT: DO you have any other specifications?

USER: I need a halt.

ASSISTANT: There is a connecting flight in Spirit airline with a fare of 100. Can I book it for you?

USER: Ok, you can proceed.

ASSISTANT: Your booking is confirmed with the flight number 1021.

USER: Thank you for your services.

ASSISTANT: Thank you for reaching our agency, have a safe journey.