You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Myself Janet Martin, I need to travel Chicago, can you please book flight ticket from  SFO to ORD.

ASSISTANT: Sure, can you please share your travel dates?

USER: My trip dates are 12/30 and 01/01.

ASSISTANT: Let me check for the availability of flight.

USER: Take your time.

ASSISTANT: Janet, I am sorry to inform you that there is no flight available at your requested dates.

USER: That's not an issue, I will choose any other source to travel that place.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: Thank you for helping out.

ASSISTANT: You are welcome.