You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to book a ticket from SFO to HOU. Can you please help me out to book a ticket for me?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: I would like to travel on Aug 09 and return back on Aug 11.

ASSISTANT: Ok, please mention your name.

USER: My name is Mark Young.

ASSISTANT: Let me know your connection limit.

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any specification?

USER: No.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for reaching us, have a nice day.