You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Please make a reservation with the name of Jonathan Lewis from Boston.

ASSISTANT: Sure, I am here to help you. May I know your travel dates?

USER: My travel dates are Sept 05 and Sept 07.

ASSISTANT: Sure, please help me with your source and destination airport codes.

USER: My source is BOS and destination is SFO.

ASSISTANT: Thank you. Do you have any class preference?

USER: No.

ASSISTANT: There is a flight having single connection in Delta airlines and the ticket fare is 100 only. Flight departs at 17:00 hours and arrives at 11:00 hours. Is that ok for you?

USER: Ok, proceed with the booking.

ASSISTANT: Your ticket is booked in economy class and your flight number is 1026.

USER: Thank you for the help.

ASSISTANT: You are welcome and thank you for contacting us.