You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I abet you?

USER: My name is Brenda Baker. I would like to participate in a mobile food distribution event, will be conducted by soldiers at Houston on 02/26. Can you assist me for booking with a connected flight?

ASSISTANT: Sure, when do you want to travel?

USER: My planned travelling dates are on 02/26 and come back on 02/28.

ASSISTANT: Kindly mention your airport codes.

USER: Sure, I am heading from Oakland, CA - OAK. My Destination is Denver, CO - DEN.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT:  Thank you for waiting, we are sorry to inform you that, there is no flights are available on your mentioned details.

USER: That's Ok, thanks for your information.

ASSISTANT: Thank you for reaching us.