You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I aid you today?

USER: I am Jack Perez.

ASSISTANT: Ok.

USER: I planning to go for NASA space center at Houston, HOU. Can you please book a ticket on 03/21?

ASSISTANT: Sure. May I have your connection limit?

USER: I need connecting flight.

ASSISTANT: Ok. Your source point please.

USER: Source code is San Francisco, SFO.

ASSISTANT: When would you return?

USER: Return is on 03/23.

ASSISTANT: Ok. You can go with Spirit airline. 1010 flight number. It's a connecting flight.

USER: You can proceed.

ASSISTANT: Your reservation is done.

USER: Thank you.

ASSISTANT: Thank you.