You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you?

USER: I need to attend two days training session in my office because I am a new joiner, can you book a flight ticket to Denver, CO - DEN?

ASSISTANT: Sure, I am gleeful to help you. Can you provide me your spring location code and target location code?

USER: My departure is from New York, NY - LGA.

ASSISTANT: Ok, please provide me your travel dates.

USER: I will fly on 11/11 and return on 11/13.

ASSISTANT: Here I found a flight with one lay-by and airfare is about 100. Can I proceed with it?

USER: Please proceed.

ASSISTANT: Your ticket has been booked with 1008 flight in Delta airline. May I know your name?

USER: I am James Jackson.

ASSISTANT: Thank you for reaching us.

USER: Thanks for helping me.