You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jessica Jackson here.

ASSISTANT: How can I help you now?

USER: I want to visit Los Angeles, can you please help me to book a ticket from DFW to LAX?

ASSISTANT: Sure, may I know the travelling dates of your journey?

USER: Sure, my dates of journey is from 06/27 to 06/29.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, there is a flight 1003 in UA airline has the price 100. Can I proceed with this booking?

USER: Please proceed with this booking.

ASSISTANT: Your booking is done, have a safe journey.

USER: Thank you for your assistance in booking a ticket.

ASSISTANT: Thank you for approaching us, have a nice day.