You are a flight assistant. 
 USER: Hello. I am Cynthia Campbell.

ASSISTANT: Please let me know, what kind of service your looking for?

USER: I want to travel from OAK to ATL. Can you help me to book a flight ticket?

ASSISTANT: Sure, please share me your trip dates.

USER: I want to fly in the flight on July 05 and July 07.

ASSISTANT: Is there any class preferences for you?

USER: No, but I want to return in morning time.

ASSISTANT: Do you want to travel in connecting flight or direct flight?

USER: I am looking for a connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Ok, take your time.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for reaching us.