You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Michelle Wright here.

ASSISTANT: How can I aid you at this moment?

USER: I need your help in booking of a flight ticket from OAK to ATL for an important business meeting, can you please help me out with booking of a flight ticket on those locations?

ASSISTANT: Sure, I am happy to help you in booking flight ticket. Can you please let me know your travel dates for booking flight ticket?

USER: Thank you. I am planning to move on 02/10 and please book my return ticket on 02/12.

ASSISTANT: Just give me a moment, I will check is there any flight available or not in this route as per your requested dates.

USER: Ok, take your time.

ASSISTANT: Sorry for the inconvenience no flights available in this route as per your requested dates.

USER: Oh! Sad to hear that. Anyway, I will choose another alternative to go there. Thank you for the information.

ASSISTANT: Thank you for contacting us.

USER: Welcome.