You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Myself Jennifer Mitchell.

ASSISTANT: Hello Mitchell.

USER: One of my friend is invite me to attend a VIVA Awards event in Chicago.Can you please help me for booking a flight ticket?

ASSISTANT: Can you mention your nearest airport codes?

USER: My airport codes are PHX and ORD.

ASSISTANT: Can I know your dates?

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

ASSISTANT: Sorry, there is no flights available on this route. Thank you for reaching us.

USER: It's ok, no problem. Thank you for your service.