You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I planned to meet my friend in IAD, can you please help me to book a flight ticket from OAK?

ASSISTANT: May I know your desired travel dates please?

USER: I prefer to travel on May 28 and May 30.

ASSISTANT: Do you have any specifications?

USER: I would like to travel in economy class.

ASSISTANT: May I know your name please?

USER: I am Edward Turner.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: Ok, please confirm my booking.

ASSISTANT: Your ticket is booked, flight number 1000 with Frontier Airlines.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.