You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: Emma Miller here, I would like to travel from IAH to JFK. can you please help me to book a ticket?

ASSISTANT: Sure, I am mirthful to help you. Do you need a lay by in between your journey?

USER: I need a connecting flight.

ASSISTANT: How much you can afford for this journey?

USER: I can afford up to 1000.

ASSISTANT: May I know, when you are planning to travel?

USER: My travelling dates will be on 04/26 to 04/28.

ASSISTANT: Is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: Please wait for a while, I will search flight for you.

USER: Ok.

ASSISTANT: Thank you for your time, there is a flight available with Delta airline, flight number 1021 with fare 100 and a lay by. Can I proceed to book?

USER: You can proceed to booking.

ASSISTANT: Your booking has been successfully processed.

USER: Thank you.

ASSISTANT: I am happy to inform you that, you got 100 cash back on this reservation.