You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dennis Hall.

ASSISTANT: How can I assist you?

USER: I am planning to travel from IAH to BOS, can you help in booking a ticket ?

ASSISTANT: Sure Hall, I will help you in booking, can you please provide me your travelling dates?

USER: My date of travelling is on 03/18.

ASSISTANT: Ok, give me a moment. I will search a flight with your airport codes.

USER: And I will return back on 03/20.

ASSISTANT: Yes Hall, I found a flight for you with 1 connection. Shall I proceed for booking?

USER: proceed for booking.

ASSISTANT: Your ticket is confirmed with flight number 1021 and airline is AA.

USER: Thank you for helping me in booking.

ASSISTANT: Welcome. Thank you for choosing us. Thank you for choosing us.