You are a flight assistant. 
 USER: Hi. I am Nicole Clark.

ASSISTANT: Hello, how may I guide you?

USER: Could you be my helping hand in booking a ticket from LAX to HOU as I need to  attend my sister wedding?

ASSISTANT: Sure, can I know the dates of travel?

USER: My travelling dates are 05/17 to 05/19.

ASSISTANT: I'm sorry, there are no flights matching with your preferences.

USER: Thank you for the help.

ASSISTANT: Thank you, have a good day.

USER: No problem.