You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: My name is Pamela Baker. I got an invitation to attend an International Conference at Dallas. Can you find any flights available?

ASSISTANT: Sure Pamela. Please tell me your journey dates?

USER: I would like to travel on dates 01/27 and 01/29.

ASSISTANT: Can I know your airport codes please?

USER: My source and destination airport codes are CLT and DFW.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flight available for you as per your details.

USER: That's ok. Thank you for your service.

ASSISTANT: Thank you for reaching us.