You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Scott Hill here.

ASSISTANT: Scott, how can I aid you today?

USER: I want to meet my client on his birthday, please book my ticket from ORD to SFO.

ASSISTANT: Ok, could you please share your planned travel dates?

USER: My itinerary dates are 02/07 and 02/09.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Hill, there is no flight available for you as per your requirements.

USER: It's ok, thank you.

ASSISTANT: Thank you for opting us.