You are a flight assistant. 
 USER: Hi, I am David Allen.

ASSISTANT: Hello,. How may I address you?

USER: I am planning to go on a holiday trip to my grand mother's place in Los Angeles CA-LAX, could you help in booking my flight ticket.

ASSISTANT: Sure, can I know your journey dates for further booking process?

USER: My journey is from TX-DFW. I would like to travel from 06/13 to 06/15, and my price limit is 5000.

ASSISTANT: Thank you for the information, There is a flight found matching your requirements with number 1025 and Spirit as airline.

USER: Ok, proceed with my booking.

ASSISTANT: Ok, your booking has been done.

USER: Ok, thanks for your service.

ASSISTANT: Thank you for choosing our service.