You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: Please assist me in booking a flight ticket from IAD to OAK.

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travel dates are from Dec 21st to Dec 23rd.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I prefer a single connection in between my journey.

ASSISTANT: Do you have any class preferences?

USER: I want an economy class to travel.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: No.

ASSISTANT: Can you please provide your name to proceed further?

USER: I am Stephanie Davis.

ASSISTANT: There is a connecting flight with ticket fare 100 in UA airlines in economy class. Is it ok for you?

USER: Please proceed.

ASSISTANT: Your booking is confirmed with flight number 1005. Depart time is 12:00 hours and arrival time is 17:00 hours.

USER: Thank you.

ASSISTANT: Thank you for contacting us, have a nice day.