You are a flight assistant. 
 USER: Hi, I am Larry Rodeiguez.

ASSISTANT: Hello, how can I assist you?

USER: I want to attend a live concert which is held at Washington, please help me by booking a flight ticket with a connection.

ASSISTANT: Sure, can I know your travel dates?

USER: My travelling dates are starting date is 10/30 and ending date is 11/01.

ASSISTANT: Ok, kindly share me your airport codes.

USER: I want to fly to DC- IAD from TX- HOU.

ASSISTANT: Soory for the inconvenience, we do not have flights on your requested dates.

USER: No issues, thank you for the information.

ASSISTANT: Thanks for choosing us.