You are a flight assistant. 
 USER: Hello, I am Karen Garcia.

ASSISTANT: Hello, How can I help you?

USER: I need to book a flight ticket from PA-PHL on 12/22 to TX-IAH on 12/24.

ASSISTANT: Wait a minute, I will check and get back to you.

USER: Ok.

ASSISTANT: I am happy to tell that there is a flight which matches your requirements  the flight details are flight nnumber : 1009, flight name : Delta. Shall I proceed with booking?

USER: Yes, you can proceed.

ASSISTANT:  Your booking has been confirmed.

USER: Thanks for your information.

ASSISTANT:  Thank you for contacting us.