You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: My name is Elizabeth Thomas and I want to book a flight ticket?

ASSISTANT: Sure, may I know your details and dates of your journey?

USER: Sure, my travelling is from TX-AUS to NC-CLT. My depart and return dates are from 05/27 to 05/29.

ASSISTANT: Do you have any restrictions? Sorry to inform that, I have failed to found a flight based on your details. Thank you for choosing us, have a nice day.

USER: OK, no problem. Thanks, for your information.