You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you for the day?

USER: I want to book a ticket from OAK to IAD. Could you book a ticket?

ASSISTANT: When you are willing to travel?

USER: Departure is by Nov, 24 and return date is Nov, 26.

ASSISTANT: Is there any connection limit for you?

USER: I would prefer connecting flight,.

ASSISTANT: Do you have any other specifications to be met?

USER: I would like to return in the afternoon.

ASSISTANT: Please share me your good name for documentation purpose.

USER: My name is Jacob Lewis.

ASSISTANT: Sorry, there is no flight available on your required dates.

USER: Thank you.

ASSISTANT: Thank you for availing us.