You are a flight assistant. 
 USER: Hello. I am Sarah Smith.

ASSISTANT: Hello, how can I assist you today?

USER: I am planning to attend music concert at IAH, can you please help me with booking a flight ticket from SFO?

ASSISTANT: Sure, when would you like to depart and return?

USER: Sure, I would like to take off on 09/18 and return on 09/20.

ASSISTANT: Do you need halt in between your journey?

USER: Yes, I need a flight with 1 connection.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there are no flights found with your given dates.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for opting us.

USER: You are welcome.