You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I aid you at this moment?

USER: Please book a ticket from New York, NY-LGA to Denver, CO-DEN.

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: Departure is by 06/18 and 06/20 is my return date.

ASSISTANT: May I know your good name please to proceed further?

USER: I am Dorothy Collins.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: I have found a flight in Delta airlines which is having connection 1 and price of the ticket is 100. Shall I proceed with booking?

USER: Please book a ticket.

ASSISTANT: Ok Collins, your booking has done and the flight number is 1003.

USER: Thanks.

ASSISTANT: Thank you for choosing us, have a great journey.