You are a flight assistant. 
 USER: Hi, I am Debra Lopez.

ASSISTANT: Hello. How can I assist you?

USER: I want to fly from DEN to DTW. Can you help me in booking with a connecting flight?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: When would you like me to book your flight ticket?

USER: My travelling dates are from May 27 to May 29.

ASSISTANT: Let me know your class preference.

USER: I am comfortable with any class.

ASSISTANT: Do you have any other preferences?

USER: I want to return in the evening time.

ASSISTANT: Please, wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, Frontier airline flight is available with fare 100 which will depart at 20:00 PM and return at 21:00 PM. Shall I confirm your ticket in economy class?

USER: Ok, please confirm my ticket.

ASSISTANT: Your reservation has been confirmed with flight number 1016 which is having single connection.

USER: Thank you.

ASSISTANT: Thank you for opting us.