You are a flight assistant. 
 USER: Hi, I am Donald Davis.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a flight with a halt to New York, NY - LGA, can you please book me a flight ticket?

ASSISTANT: Please provide your origin airport code.

USER: My origin is Houston, TX - IAH.

ASSISTANT: Please share your travelling dates.

USER: My journey dates are on 05/04 to 05/06.

ASSISTANT: UA airlines with single connection and price is 100 of 1017 flight.

USER: Ok, please book my ticket.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.