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

ASSISTANT: Hello, what can I do for you today?

USER: As I am a scientist, I want to research on Rockets in NASA Space Center at Houston, TX - HOU. Can you please book a ticket on 12/20?

ASSISTANT: Sure, when would you like to return from TX-HOU?

USER: I intend to return on 12/22.

ASSISTANT: Ok, where would you like to board?

USER: Ok, My source is Washington, DC - DCA.

ASSISTANT: Do you have any other requirements?

USER: Yes, I need a connection.

ASSISTANT: There is a 1010 Frontier airline matches your requirements. Can I proceed with reserving a flight ticket?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been reserved susses fully.

USER: Thanks for booking.

ASSISTANT: Thank you for connecting with us, have a safe journey.