You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide assistance for you?

USER: I want to book a flight ticket within 500. Can you help me to book a flight ticket?

ASSISTANT: Sure, I am mirthful to help you. May I know, from where would you like to board?

USER: TX-HOU will be my boarding airport code.

ASSISTANT: Help me with your travelling dates.

USER: 05/17 and 05/19 are my travelling dates.

ASSISTANT: Can I know your good name please?

USER: I am Robert Jackson.

ASSISTANT: Kindly, share your landing airport code to proceed further.

USER: Sure, I would like to land at MA-BOS.

ASSISTANT: Please, hold on for a while.

USER: Ok.

ASSISTANT: Thank you for being patience, there is a flight available in Delta airline, flight number 1013 having fare 100 and a lay by. Can I proceed to reserve?

USER: You can proceed with booking.

ASSISTANT: Your reservation has been successfully processed.

USER: Thank you.

ASSISTANT: Thank you for availing us.