You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Sandra Green. I am a science student, I have to visit Space Center in Houston for my project work can you please book a flight ticket from DEN to IAH.

ASSISTANT: Sure, I will help you to book a ticket. May I know your travelling dates?

USER: My flying and landing dates are 07/19 to 07/21.

ASSISTANT: Please wait a moment. Hawaiian airlines with single connection and price is 100 of 1008 flight. Shall I proceed for booking?

USER: You can book it.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for booking.

ASSISTANT: Thank you, have a nice day.