You are a flight assistant. 
 USER: Hello, I am Sandra White.

ASSISTANT: Hello, how can I help you today?

USER:  I have to book a flight ticket  that I am unable to do, could you please help me in booking flight ticket on dates 11/27 and 11/29?

ASSISTANT: Sure, I am here to help you in booking. Could you please share your airport codes?

USER: My airport codes are MCO and HOU.

ASSISTANT: Do you have any connection preference?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: That's ok, thank you for the response.

ASSISTANT: Thanks for reaching us.