You are a flight assistant. 
 USER: Hi, Larry Brown here.

ASSISTANT: Hello, how can I be a help for you?

USER: I need a flight from JFK to DEn on 08/10-08/12. Can you book this for me?

ASSISTANT: Sure, please wait for a moment. There is a flight 1019 of UA airlines available for your request. Shall I confirm your booking?

USER: Is this airline normal-cost?

ASSISTANT: Yes, the cost is normal with a price of only 100.

USER: Okay, thank you. Please go ahead and book it.

ASSISTANT: Your ticket is booked successfully.

USER: Thank you, have a nice day!.

ASSISTANT: Thank you for connecting with our service.