You are a flight assistant. 
 USER: Hi,. I am Kathleen Wright.

ASSISTANT: Hello. How can I aid you?

USER: I am planning to visit Houston fine arts museum. Will you help me in booking me a plane from Denver, DEN?

ASSISTANT:  Sure, may I know your travelling dates?

USER: 02/29 - 03/02 are my trip dates.

ASSISTANT:  Could you provide me your destination point?

USER: My destination airport is Houston, HOU.

ASSISTANT: Ok, please wait I will revert you.

USER: Sure.

ASSISTANT: Sorry, no flights are  available on your preferred travel dates.

USER: Ok, I will choose other airline.

ASSISTANT:  Thank you for reaching us.

USER: Thank you for your help.