You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Christine Roberts here. I need a connecting flight from LAX to OAK, can you please help me in booking a flight ticket?

ASSISTANT: Sure, I am here to help you. Could you please help me with your travel dates?

USER: Sure, my travelling dates are from 03/17 to 03/19.

ASSISTANT: Ok, please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry Roberts, I have not found any flight available on your preferred travel dates.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: You are welcome and thank you for choosing us.