You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Brenda Garcia. I need your help in booking my flight ticket from IAH to SFO. Please help me.

ASSISTANT: Sure, we are here to help you with that. Can you please share your preferable travel dates?

USER: I want to depart on July 22nd and I have to return back in the evening on July 24th.

ASSISTANT: Which class do you prefer either economy or business?

USER: I am comfortable with both the classes.

ASSISTANT: May I know your connection limit?

USER: I need single connection.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: There are no flights found on this route as per your details.

USER: Not an issue, I will find an other way to reach my destination. Thank you for checking.

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