You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: Can you please help me in booking a flight ticket from SFO to ORD?

ASSISTANT: Sure, please share your planned travel dates.

USER: I want to fly on Feb 10 and return on Feb 12.

ASSISTANT: Do you have any depart and return time preference?

USER: I am comfortable with any timings.

ASSISTANT: Which airline do you prefer to travel?

USER: I would like to prefer normal cost airline.

ASSISTANT: May I know if you have any other preference?

USER: I need a single connection.

ASSISTANT: Sorry to inform you that we didn't find any flight for your journey details.

USER: Not an issue. Thank you.

ASSISTANT: May I know your name please?

USER: Myself Helen Moore.

ASSISTANT: Thank you.