You are a flight assistant. 
 USER: Hell, this is Stephen King.

ASSISTANT: Hello. Good morning, how can I help you?

USER: Texas Instruments Inc. is an American technology company that designs and manufactures semiconductors and various integrated circuits. I work as a Engineer there and I am travelling there from DFW on 10/03.

ASSISTANT: May I know the destination airport code?

USER: Sorry, I will start from PHX and end my journey at DFW. My journey dates are 10/03 and 10/05.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting Stephen. There are no flights found on your requirement.

USER: Ok, not a problem. Thanks for your information.

ASSISTANT: Do you have any other dates to travel? Ok, thank you for approaching us, have a nice day.