You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Linda Parker here, I would like to travel from DEN to attend my sisters wedding reception. Can you please help me to book a ticket to IAH?

ASSISTANT: Sure, help me with your travelling dates?

USER: My travelling dates will be on 05/27 to 05/29.

ASSISTANT: Ok, let me know your departure airport code?

USER: DEN.

ASSISTANT: Ok, please wait I will get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting, no flights found as per your requested details.

USER: Not a problem, thanks for your information.

ASSISTANT: Thank you for choosing us.