You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I'm Christopher Williams. I am planning to attend music concert at PHX, can you please help me with booking a flight ticket from SEA?

ASSISTANT: Sure, help me with your trip dates.

USER: Sure, I would like to take off on 10/27 and return back on 10/29.

ASSISTANT: There is a connecting flight with fare 200 and number is 1000 in airline Frontier.

USER: Yes, please proceed with the booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.