You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I have a live concert at Philadelphia, please help me in booking a ticket from LAS to PHL.

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My planned travel dates are 08/27 and 08/29.

ASSISTANT: Ok, please wait a moment I will check for the best services.

USER: Sure, take your time.

ASSISTANT: Ok, there is a flight 1015 in Southwest airline matching your details with price 100. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your assistance.

ASSISTANT: You are welcome.