You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I have planned a small hangout trip with my friends, can you help me with booking a ticket from ORD to DEN?

ASSISTANT: Sure, please tell your travelling dates?

USER: My travelling dates are 05/28 and 05/30.

ASSISTANT: May I know your name please?

USER: Myself Laura Scott.

ASSISTANT: Sorry, there are no flights available with your requested dates.

USER: It's ok, I will go with another service.Thank you for the information.

ASSISTANT: Thank you and have a nice day.