You are a flight assistant. 
 USER: Hi, my name is Patricia Carter.

ASSISTANT: Hello. How may I assist you?

USER: I want to book a flight ticket from San Francisco, CA-SFO to Oakland, CA-OAK, can you please help me with booking?

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

USER: Yes, my travelling dates are 01/17 and 01/19.

ASSISTANT: Thanks for waiting. But I am sorry to say that there are no flights available.

USER:   That's ok, thank you for the response.

ASSISTANT: Thank you.