You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I need you to book a flight ticket from IAD to EWR. Please help me.

ASSISTANT: Sure, we are glad to help you. Please let me know your travelling dates.

USER: June 19 and 21 are my planned travelling dates.

ASSISTANT: Do you have any connection limit?

USER: Yes, I do need a break in my journey.

ASSISTANT: Is there any other specifications for you?

USER: Nothing much to state.

ASSISTANT: May I know your good name?

USER: My name is Betty Evans.

ASSISTANT: We found a connecting flight in Hawaiian airline with a fare of 100 which departs at 14:00 and return at 16:00. Shall I proceed for booking?

USER: Please book the flight ticket.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1001.

USER: Thank you.

ASSISTANT: Thank you for choosing us.