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

ASSISTANT: Hello, how may I address you?

USER: I would like to attend my friend birthday, can you help me to book a ticket?

ASSISTANT: Sure, please share your travelling dates?

USER: My travelling dates are from 05/09 to 05/11.

ASSISTANT: What are your travelling points?

USER: My travelling points are from IAH to LAS.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: We found a connecting flight with fare of 100 in Spirit airline. Shall I proceed for booking with 1004 flight number?

USER: Yes, you can.

ASSISTANT: Your booking has been done. Have a safe journey. Thanks for choosing us.

USER: Thanks for booking my ticket.