You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you help me to book a flight from DEN to EWR?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My travelling dates are Feb 08 and 10.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight for this trip. I would like to prefer normal cost airline.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: Please hold on for a while.

USER: Sure.

ASSISTANT: May I know your name?

USER: My name is Angela Williams.

ASSISTANT: Sorry Angela Williams, no direct flights are available in normal-cost airlines.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for contacting us.