You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Kathleen Allen. I want to travel from LAX to meet my family, can you please help me to book a flight ticket to SFO?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Can you please provide your planned journey dates?

USER: Sure, my journey dates are Aug 19 and Aug 21.

ASSISTANT: Let me know your class preference.

USER: I am comfortable to travel in any class.

ASSISTANT: Do you have any specific time for your departure and arrival?

USER: My return time is morning.

ASSISTANT: May I know your connection limit?

USER: I need a single connection flight.

ASSISTANT: Please, wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting, there were no flights available that matches your requirements.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for approaching us.