You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to visit Philadelphia, can you please book me a ticket from SEA to PHL?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: My preferable journey dates are Sept 21 and Sept 23.

ASSISTANT: Ok, please mention your name.

USER: My name is Christopher Wright.

ASSISTANT: Ok, do you have any connection limit?

USER: No, I don't have any specifications for this trip.

ASSISTANT: Here, I found a flight for you with single connection and ticket fare is 100. Shall I proceed for booking?

USER: Please reserve my ticket in this flight.

ASSISTANT: Your ticket is booked with flight number 1004 and airline is Frontier.

USER: Thank you for booking my ticket.

ASSISTANT: Welcome, have a safe flight.