You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you aid me in booking flight ticket from SFO to IAH?

ASSISTANT: Sure, let me know your travelling dates.

USER: My trip dates are Mar 13th and Mar 15th.

ASSISTANT: Do you have any limits on number of connections?

USER: I need a connecting flight to reach my destination.

ASSISTANT: Do you have any specifications?

USER: I would like to travel in economy class which departs in the afternoon.

ASSISTANT: May I know your name?

USER: Sure, I am Carolyn Scott.

ASSISTANT: Sorry, there are no flights found based on your details.

USER: Ok, not a problem. Thank you for checking.

ASSISTANT: Thank you for choosing us.