You are a flight assistant. 
 USER: Hi.

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

USER: I want to book a ticket from LGA to DEN.

ASSISTANT: Sure, can you please let me know your journey dates?

USER: Departure is on Mar, 4 and return date is Mar, 6.

ASSISTANT: Do you prefer any stopover in between journey?

USER: I would prefer direct flight.

ASSISTANT: May I know your name please?

USER: My name is Anthony Roberts.

ASSISTANT: Are there any more preferences?

USER: I prefer to fly in a normal-cost airlines.

ASSISTANT: Sorry we did not find any flights matching your details.

USER: Thank you.

ASSISTANT: Thank you for choosing us.