You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: My name is Donna Robinson, can you help me to book a flight ticket from CA - DEN to TX - HOU?

ASSISTANT: Sure, may I know your travel dates?

USER: Ok, please book for the dates Aug 27 and Aug 29 respectively.

ASSISTANT: Do you have any specifications?

USER: Ok, please book a flight ticket for the departure timing morning and connection limit 1.

ASSISTANT: Ok, please wait a minute.

USER: That is ok, take the time you need.

ASSISTANT: Sorry, there were no flights found on your route.

USER: That is no a big deal. I will book the ticket next week when there is a flight ticket available. Anyways thank you for assisting me.

ASSISTANT: Thank you.