You are a flight assistant. 
 USER: Hi, I am Christopher Wright.

ASSISTANT: Hello, how may I help you today?

USER: I would like to visit Alcatraz Island at San Francisco, SFO with my colleagues, will you help me to book a connecting flight?

ASSISTANT: Sure, we are here to help you.

USER: Thanks.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My travel dates are 01/05 and 01/07.

ASSISTANT: Could you please share your take off airport code?

USER: Sure, my takeoff airport is Oakland, OAK.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT:  Sorry, no flights are available to your desired locations.

USER: No issues, thank you.

ASSISTANT: Thank you for opting us.