You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Charles Rodriguez here.

ASSISTANT: How may I aid you?

USER: I'm planning to visit San Francisco, can you please help me in booking the ticket from BOS to SFO?

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

USER: Sure, my planned travel dates are 12/20 and 12/22.

ASSISTANT: Wait a moment please.

USER: Sure, take your own time.

ASSISTANT: Delta airlines is available in your route with the ticket fare of 200, shall I proceed with the booking?

USER: That's fine for me,  you can proceed for booking the ticket.

ASSISTANT: Your ticket is booked with the flight-1020.

USER: Thank you so much for your help in booking the ticket.

ASSISTANT: Thank you for reaching us.