You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Lisa Parker here.

ASSISTANT: How can I assist you?

USER: I want your help in booking a flight ticket from DFW to OAK, can you please help me out with that?

ASSISTANT: Sure Lisa, please provide me your journey dates.

USER: Sure, my trip dates are from 04/25 to 04/27.

ASSISTANT: Please give me a minute.

USER: Ok, take your time.

ASSISTANT: I found a flight in Southwest airlines with price 100. Shall I book the ticket for you?

USER: Please proceed with booking.

ASSISTANT: Your ticket is confirmed and the flight number is 1015.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.