You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Donna Baker here. I am a tennis player, I have to play in a match at Oakland. So please book my ticket from San Francisco.

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My itinerary dates are 02/10 and 02/12.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: My genesis and terminus airport codes are SFO and OAK.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flights available on your requested dates.

USER: No problem, I will find an alternative way to travel.

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

USER: Thank you for your help.