You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Robert Campbell. I want to book a ticket from New York, JFK to Denver, DEN.

ASSISTANT: Ok.

USER: Will you help me to book a ticket?

ASSISTANT: Sure, I am happy to help you.

USER: Thank you.

ASSISTANT: May I know, when are you planning to start your journey?

USER: I will depart on 07/21 and arrive on 07/23.

ASSISTANT: Do you have any requirements?

USER: I need a halt.

ASSISTANT: Thank you for sharing your details. Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for being patience, there is a flight available with Southwest airline, flight number 1022 with fare 100 and a lay by. Shall I proceed to book?

USER: You can book.

ASSISTANT: Your reservation has been successfully processed.

USER: Thank you.

ASSISTANT: Thank you for contacting us.