You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Jessica Gonzalez here. Can you please book a flight ticket from OAK to ATL?

ASSISTANT: Yes, I can do that for you. Can you share me your dates of travelling?

USER: Sure, I need to travel on dates of 10/28 and 10/30.

ASSISTANT: Ok, give me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates. Thank you for approaching us.

USER: It's ok fine, no problem. Thank you for your time.