You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nancy Johnson.

ASSISTANT: How can I assist you today?

USER: I am planning to travel from DTW to SEA. Can you please help me to book a ticket?

ASSISTANT: Sure, I can help you. May I know your travel dates please?

USER: My travelling dates will be on Aug 4 to Aug 6.

ASSISTANT: May I know your class preference please?

USER: I am comfortable with any class.

ASSISTANT: Do you have any time concerns?

USER: Yes, I want to return in the afternoon.

ASSISTANT: Please let me know if you have any other specifications.

USER: I do not have any other specifications.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Hawaiian airlines is providing a direct flight on that route with ticket fare of 200, shall I proceed for booking?

USER: You can proceed.

ASSISTANT: I have successfully booked you an economy class ticket in flight-1019, it's departure time is 5 AM and return time is 18 PM.

USER: Thank you.

ASSISTANT: Thank you for choosing us.