You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: Can you please help me in booking a flight ticket from  IAH to PHL?

ASSISTANT: Sure, can you share your trip dates?

USER: My trip dates are July 25 - July 27.

ASSISTANT: Do you have any preferences?

USER: I prefer a flight with a single connection.

ASSISTANT: May I know your name?

USER: Cynthia Wright here.

ASSISTANT: There is a connecting flight with number 1001 in airline Spirit, the fare is 200 in economy class. Can I book it?

USER: Please reserve.

ASSISTANT: Your ticket is reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.