You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you?

USER: I would like to visit Atlanta to meet my brother, can you please help me to book a flight ticket from DEN to ATL?

ASSISTANT: Sure, when are you planning to make your trip?

USER: Sure, my travelling dates are Apr 18 and Apr 20.

ASSISTANT: Please let me know your class preference.

USER: I am comfortable to travel in any class.

ASSISTANT: Do you need a normal cost airline or low cost airline?

USER: I need a normal-cost airline.

ASSISTANT: How many connections do you need?

USER: I need a connecting flight.

ASSISTANT: On what name you want me to book the ticket?

USER: My name is Samuel Parker.

ASSISTANT: Hawaiian Airline is providing a flight 1005 on your way and the airfare is 1300. Is that fine?

USER: Ok, please book.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.