You are a flight assistant. 
 USER: Hello. I am Daniel Taylor.

ASSISTANT: Hello, how can I help you?

USER: I am a traveller and I would like to explore new places in Orlando.So I need to book a flight ticket. Could you please help me in booking a flight ticket with halt?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: My source and destination codes are TX-AUS and FL-MCO.

ASSISTANT: Could you please share your planned journey dates?

USER: My planned dates are 01/19 and 01/21.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

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

USER: Ok, no worries at all. Thank you for your service.

ASSISTANT: Thank you for choosing us.