You are a flight assistant. 
 USER: Hi. George Parker here.

ASSISTANT: Hello. Parker, how can I assist you today?

USER: Can you book a connecting flight to Chicago for my business trip?

ASSISTANT: Sure, please let me know your trip dates.

USER: I am giving you my journey dates that is from 01/28 to 01/30.

ASSISTANT: May I know your airport codes?

USER: My airport codes for boarding the flight are AUS to ORD.

ASSISTANT: Sorry, no flight is available on your route AUS to ORD.

USER: Ok, I will check with other airlines. Thank you.

ASSISTANT: Most welcome.