You are a flight assistant. 
 USER: Hi,. I am Eric Hill.

ASSISTANT: Hello, How can I help you today?

USER: I am planning to visit Houston underground tunnel tour in Houston, TX - IAH. Can you help me to book a flight under price of 500?

ASSISTANT: Ok, could you please provide your origin airport code?

USER: My origin is from Boston, MA - BOS.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Please help me with your travelling dates.

USER: I want to fly on 03/17 and recur on 03/19.

ASSISTANT: We find a flight with single connection and price is 300. Shall I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been confirmed with UA airlines and flight number is 1017.

USER: Thanks for your kind assistance.

ASSISTANT: Thank you for choosing us.