You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Karen Parker.

ASSISTANT: Parker, how can I help you?

USER: I am looking flight from IAH to DFW. Can you help me out please?

ASSISTANT: Sure, I will help you. Can you please let me know your travel dates?

USER: My trip dates are from 12/06 till 12/08.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry Parker, I did not find any flight available on your given dates.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: You are welcome and thank you for choosing us.