You are a flight assistant. 
 USER: Hello, I am Helen Robinson.

ASSISTANT: Hello, how can I aid you?

USER: I am very excited to visit John F. Kennedy Presidential Library and Museum with my friends in Boston, can you help me with reservation.

ASSISTANT: Sure, Please share me your travelling dates?

USER: Yes, my depart is 12/25 and return on 12/27.

ASSISTANT: May I know your price limit?

USER: I need price under 200 with single connection of flight.

ASSISTANT: Can you provide me your airport codes?

USER: Sure, my origin is TX - IAH and destination is MA - BOS.

ASSISTANT: Please wait for a while, I will check and revert you.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a flight with single connection. Spirit airline, flight number 1003 with the price of 100. Shall I proceed?

USER: OK, proceed with it.

ASSISTANT: Your booking has been confirmed, have a safe journey.

USER: Thank you, for the help.

ASSISTANT: Thanks for choosing us.