You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I address you?

USER: I am Pamela Walker. Could you help me in booking a flight ticket from EWR to DEN?

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

USER: I want to fly on Apr 27, return on Apr 29.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: At what time would you like to depart and return?

USER: My depart time should be afternoon.

ASSISTANT: Could you please let me know your connection preference?

USER: I want a flight with one connection.

ASSISTANT: We found a Frontier airline going on your way from EWR in the afternoon and the ticket cost is 200. Is that fine?

USER: Ok, proceed to booking.

ASSISTANT: Your booking has been done in flight 1001.

USER: Thank you.

ASSISTANT: Thank you for opting us.