You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Carolyn Rodriguez.

ASSISTANT: In which way I can assist you today?

USER: Can you help me in booking a ticket on the dates from 05/22 to 05/24.

ASSISTANT: Sure, I can help you with that.

USER: Thanks.

ASSISTANT: May I know your preferable airport code names for booking flight ticket?

USER: My airport codes are SEA and HOU.

ASSISTANT: Ok, please wait a moment, I will check flight availability.

USER: Ok.

ASSISTANT: Sorry no flights available in this route as per your requested dates.

USER: It's fine. Thank you for your help.

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