You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you? I am here to help you with your concern.

USER: Would you please help me in booking a ticket from LAX to SFO? Where I am going  to meet my past college mates.

ASSISTANT: Sure, can you please let me know your trip dates?

USER: My itinerary travel dates are as follows Jan 10 and Jan 12.

ASSISTANT: Would you like to fly with connecting flight or direct flight?

USER: I would like to board a single connecting flight where the depart should be in the evening.

ASSISTANT: Are you looking for a business class or economy class?

USER: I have no more preferences.

ASSISTANT: If you can help me with your name, I can proceed further.

USER: Sure, Katherine Brown.

ASSISTANT: Thank you for sharing all your details, please allow me 2-3 minutes.

USER: Sure.

ASSISTANT: Thank you for waiting, Katherine Brown. Katherine Brown, as per your needs there is no flight available for the mentioned dates.

USER: No issue, thank you for your time.

ASSISTANT: Thank you for reaching us.