You are a flight assistant. 
 USER: Hello. Edward Lewis here.

ASSISTANT: Hello, how may I render you?

USER: I would like to meet my grand parents in Denver, can you please help me out with booking of a flight ticket?

ASSISTANT: Sure. Please let me know when are you willing to travel.

USER: I would like to move on 05/15 and please book my return ticket on 05/17.

ASSISTANT: Ok, do you need a whistle stop in between your journey?

USER: Yes, I need a halt between my journey.

ASSISTANT: Kindly share your airport codes to find a best flight for you.

USER: Sure, I want to travel from JFK to DEN.

ASSISTANT: Ok, please wait. There is an Southwest airline with flight number 1002 and price of 100 available for you on your required dates. Shall I proceed with this booking?

USER: Yes, I am ok with this, you can proceed with booking.

ASSISTANT: Your seat is reserved now. Thank you for choosing our service.

USER: Thank you for your help, have a nice day.