You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I want to book a flight on Feb 21 to visit my home. Can you find me flight to Houston?

ASSISTANT: Sure, do you need  direct flight or connecting flight?

USER: I prefer a connecting flight.

ASSISTANT: May I know your airport codes?

USER: My source point is BOS and destination point is IAH.

ASSISTANT: Can you please share your return date?

USER: I will return on Feb 23.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your good name?

USER: My name is Mary Rodriguez.

ASSISTANT: We found a United airline with flight number 1000 and fare of 200 with class is economy. Shall I proceed with booking?

USER: Please proceed with booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.