You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How can I help you?

USER: Please book a ticket from Philadelphia, PA-PHL to San Francisco, CA-SFO.

ASSISTANT: Sure, may I know your travel dates please?

USER: My departure is on 12/14 and 12/16 is return date.

ASSISTANT: May I know your good name please?

USER: I am Samantha King.

ASSISTANT: Do you have any other specifications?

USER: Price limit 200.

ASSISTANT: Ok, please be on hold.

USER: Connections limit 1.

ASSISTANT: Frontier airlines is having a flight with travel charge of 100, shall I book the ticket?

USER: Please book a ticket.

ASSISTANT: Your ticket has been booked with flight-1001, have a safe journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us, King.