You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you?

USER: My name is Stephanie Carter. I would like to visit Space Center Houston with my family, can you please help me in booking a flight ticket?

ASSISTANT: Sure, can you please provide me your airport codes and preferable dates?

USER: The airport codes are DCA and IAH. The dates are from 09/09 to 09/11.

ASSISTANT: As per your request there is a flight 1015 of UA airlines available for you.

USER: Ok, please book the ticket.

ASSISTANT: Your ticket is booked successfully. Thank you for approaching us.

USER: Thank you for your help.