You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I would like to know the history of Liberty Bell at Philadelphia, could you please help me out in booking a ticket?

ASSISTANT: Sure, please share your airport codes.

USER: My airport codes are from IAD to PHL.

ASSISTANT: Could you tell me your travel dates?

USER: Sure, my journey dates are from 12/21 to 12/23.

ASSISTANT: Please let me know your name.

USER: My name is Barbara Perez.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is a flight-1026 of Frontier airline is available for you, shall I proceed?

USER: Ok, please proceed my booking.

ASSISTANT: Your ticket has been booked successfully.

USER: Thank you very much.

ASSISTANT: Thank you for choosing us. Have a nice day.