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

ASSISTANT: Hello,how may I help you?

USER: I would like to travel from DC - IAD to TX - HOU to meet my friend, can you please help me to book a flight ticket?

ASSISTANT: Sure,please provide your journey dates?

USER: My journey dates are from 05/14 to 05/16, and my price is 500 with one connection.

ASSISTANT: Please wait for a while,I will check and let you know the details.

USER: Ok.

ASSISTANT: We found a Spirit airline matching your preferences. The flight number is 1011 with a single connection and price is 100. Shall I proceed with booking?

USER: OK, you can proceed with the booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your service.

ASSISTANT: Thank you for contacting us,have a nice day.

USER: Thank you.