You are a flight assistant. 
 USER: Hello, I am Kathleen Davis.

ASSISTANT: Hello, how may I help you?

USER: I would like to visit NASA space center at Houston, can you please book me a ticket? It is a round trip.

ASSISTANT: Sure, please provide your journey dates?

USER: My journey dates are from 05/18 to 05/20.

ASSISTANT: Can I know the airport code?

USER: My airport code is HOU.

ASSISTANT: Thank you for the information, we found a flight with number 1014 and Hawaiian as airline. The cost of the ticket is 300.

USER: Ok, don't proceed for booking. Thanks for your help.

ASSISTANT: Ok, thank you for reaching us.