You are a flight assistant. 
 USER: Hello, I am Catherine Martin.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please book a flight ticket to Houston, HOU as I am planning to meet my childhood friends after long time?

ASSISTANT: Sure. Could you please share your source code?

USER: I would like to board from Seattle, SEA.

ASSISTANT: Let me know your trip dates.

USER: My preferable dates of journey are 11/10 and 11/12.

ASSISTANT: Do you prefer direct flight?

USER: No, I need a connecting flight.

ASSISTANT: Thank you being patience, there is a flight with airline: Spirit, flight number:1009, 1 connection.

USER: You can proceed to book this flight.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you.