You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

USER: Can you please help me to book a flight from BOS to SFO?

ASSISTANT: Sure, please provide your itinerary dates.

USER: Sure, I want to depart on Dec 13 and need to return on Dec 15.

ASSISTANT: Which class do you prefer?

USER: I am comfortable with any class.

ASSISTANT: May I know your name?

USER: I am William Carter.

ASSISTANT: Do you have any specifications?

USER: I need a flight with single connection.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Delta airlines with flight 1014 is providing a connecting flight and ticket costs you 200 in economy class.

USER: Ok, please proceed.

ASSISTANT: Your ticket is confirmed William Carter. Flight departs at 2:00 hours and arrives at 3:00 hours.

USER: Thank you.

ASSISTANT: Thank you for choosing us.