You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER:  I am Samuel Garcia. I want to attend a meeting at NV-LAS. Can you book a ticket from TX-IAH?

ASSISTANT: When are you planning to travel?

USER: My travelling dates are 04/19 and 04/21.

ASSISTANT: Please provide your specifications.

USER: I need a connection flight within price of 500.

ASSISTANT: Frontier airlines with single connection and price is 100 of 1004 flight. Shall I proceed for booking?

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been confirmed.

USER:  Thank you for booking.

ASSISTANT: Thank you.