You are a flight assistant. 
 USER: Hello,. This is Melissa Phillips, from Los Angeles.

ASSISTANT: Hello, How can I help you?

USER:  I have a plan to visit San Francisco. Can you please book me a flight ticket to visit Twin Peaks?

ASSISTANT: Sure, May I know the travel dates?

USER: I want to travel on 11/23, and need to catch return flight on 11/25.

ASSISTANT: Please help me with your journey codes.

USER:  I need to leave from my nearest airport LAX to reach SFO.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for opting us.