You are a flight assistant. 
 USER: Hello, I am Cynthia Edwards.

ASSISTANT: Hello, how may I serve you?

USER: I want to attend a business trip in Houston, Can you book me a ticket with price range of 200?

ASSISTANT: Sure, may I know your departure and arrival date?

USER: I start on 05/02 and return on 05/04.

ASSISTANT: Can you please share me your source and landing point?

USER: My airport codes are MA - BOS and TX - HOU.

ASSISTANT: Please wait for a moment.

USER: OK.

ASSISTANT: We found a flight with Southwest airlines of flight 1018. Shall I proceed?

USER: You can proceed for booking.

ASSISTANT: Your seat has been reserved with fare 100.

USER: Thank you for the information.

ASSISTANT: Thank you for choosing us.