You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I want to attend some official seminar. Can you book a ticket from SFO to IAH?

ASSISTANT: Sure, please share your itinerary dates.

USER: My planned travel dates are 03/10 and 03/12.

ASSISTANT: May I know your connection limit?

USER: I want a flight with single connection.

ASSISTANT: Which class do you prefer?

USER: I am comfortable with any class but make sure that, my return should be in afternoon only.

ASSISTANT: May I know your name?

USER: Sure, Pamela Wright here.

ASSISTANT: Please wait for a while.

USER:  Sure.

ASSISTANT: Sorry Pamela Wright, no flights are available from Houston in the afternoon.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching us.