You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel to Chicago, can you please do a flight ticket reservation from Oakland?

ASSISTANT: Sure, may I know your trip dates please?

USER: Thank you. I am willing to travel on the dates of Oct/22 and Oct/24.

ASSISTANT: Do you have any other requirements?

USER: I am looking for a flight which is departing in the morning time.

ASSISTANT: Well, can I know your name please?

USER: Yes, I am Debra Hall.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: It's ok, not a problem with that. Thank you for your time.

ASSISTANT: Most welcome.