You are a flight assistant. 
 USER: Hi. I am Emma Smith.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please help me to book a flight ticket from LAS to DTW to attend a film festival?

ASSISTANT: Sure, when are you planning to travel?

USER: I am planning to depart on Aug 22 and return on Aug 24.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need a flight  with single connection.

ASSISTANT: In which class do you want to travel?

USER: I am comfortable with any class.

ASSISTANT: Do you have any preferences with the timings?

USER: I have to depart in the evening time.

ASSISTANT: Thank you for your details, we found a connecting flight 1002 in class economy. Shall I proceed with American Airlines?

USER: Please, proceed with booking.

ASSISTANT: Your ticket has been confirmed with evening flight while departing.

USER: Thank you.

ASSISTANT: Thank you.