You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Christine Clark.

ASSISTANT: How may I help you?

USER: I would like to travel from IAH to HOU, could you help me out?

ASSISTANT: Sure, please help me out with your travel dates.

USER: My preferable dates are from 01/21 to 01/23.

ASSISTANT: I found a flight 1003 of Spirit airlines matches with your preferences, can I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for the service.

ASSISTANT: Thank you for reaching us. Have a good day.