You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I am Donald Thompson. I am planning to visit NASA Space Center at Houston HOU.

ASSISTANT: Ok.

USER: Can you help me with booking from Philadelphia PHL?

ASSISTANT: Sure. May I know your travelling dates?

USER: My travelling dates are 04/28 to 04/30.

ASSISTANT: Do you have any preferences?

USER: I am comfortable with any class.

ASSISTANT: You have a flight 1000 in JetBlue airline and price 200 with a connection. Shall I proceed?

USER: Please reserve it.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.