You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I support you?

USER: Can you please book me a flight ticket from SEA to DTW to meet my family?

ASSISTANT: Sure, to book a ticket may I know when would you like to travel?

USER: I have planned to travel on July 15th and return on July 17th.

ASSISTANT: Do you have any other requirements?

USER: I like economy class.

ASSISTANT: Please provide your name.

USER: Jason Johnson.

ASSISTANT: We are glad to inform you that there is a flight found with an United airline of flight 1012 in an economy class with lay by. Shall I proceed?

USER: Ok, please book it.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.