You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I serve you?

USER: How can I serve you? Sorry. I need to book a flight ticket from IL-ORD to AZ-PHX.

ASSISTANT: Could you please provide me your travelling dates?

USER: My travelling dates are departure date is Sept/09 to arrival date is Sept/11.

ASSISTANT: Please wait a while I will get you back.

USER: OK.

ASSISTANT: Thanks for being patient. There are  no flights that matches to your requirement.

USER: OK.Thanks for your information.

ASSISTANT: Can you please tell me your name for documentation?

USER: Stephanie Carter.

ASSISTANT: Thank you have a great day.

USER: OK.Thank you.