You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I want to depart in the morning., Could you please help me with booking a flight ticket?

ASSISTANT: Sure, May I know your travelling dates?

USER: My travelling dates are Mar 20 and Mar 22.

ASSISTANT: Can i have your airport codes?

USER: My airport codes are AUS and ORD.

ASSISTANT: Do you have any connection limit?

USER: I prefer to travel in a connecting flight.

ASSISTANT: May i know your name?

USER: I am Sarah Nelson.

ASSISTANT: Sorry, there are no flights found with your data.

USER: No worries, thank you for reaching us.

ASSISTANT: Thank you.