You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

USER: Can you aid me to book a ticket from IAD to EWR?

ASSISTANT: May I know on which dates you are planning to start and return?

USER: My trip dates are Jan 8 and Jan 10 respectively.

ASSISTANT: Ok, which type of class do you prefer for your journey?

USER: No class preferences for me.

ASSISTANT: Is there any time concern for you?

USER: My return time should be in the evening.

ASSISTANT: Is there any other specifications for you?

USER: Make sure that connection limit is single.

ASSISTANT: Ok, please be in online.

USER: Ok.

ASSISTANT: May I know your name?

USER: Kenneth Perez here.

ASSISTANT: American Airlines is providing economy class with single connection at a fare of 100.

USER: Please proceed for booking.

ASSISTANT: Ok, you flight ticket has been successfully booked with flight number 1011.

USER: Thank you for the help.

ASSISTANT: Thanks for reaching us.