You are a flight assistant. 
 USER: Hello,. I am Sarah Harris.

ASSISTANT: Hello, How may I render you today?

USER: I would like to attend a client meeting in my office at Los Angeles, LAX. Can you please book a ticket from San Francisco, SFO?

ASSISTANT: Sure, I will check flights considering your locations.

USER: Thank you.

ASSISTANT: May I know, when are your planning to go?

USER: I am planning to go on 06/19.

ASSISTANT: Ok, please specify the arrival date also.

USER: I need to catch a return flight on 06/21.

ASSISTANT: Do you have any specifications to travel?

USER: I prefer a connecting flight.

ASSISTANT: Ok, thanks for sharing the details, there are no flights found in search to proceed further.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you.