You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I would like to book a direct flight, could you please help me with name Susan Roberts?

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

USER: My travelling dates are Jan 1 and Jan 3.

ASSISTANT: May I know your airport codes please?

USER: My airport codes are HOU and DTW.

ASSISTANT: OK, please wait a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry no flights found with your details.

USER: No worries, thank you for the information.

ASSISTANT: May I know your name please?

USER: I have already mentioned.

ASSISTANT: Thank you, have a good day.