You are a flight assistant. 
 USER: Hello, I am Nicole Williams.

ASSISTANT: Hello. How can I serve you?

USER: I am planing to attend my sports festival in DC - IAD, can you help me with booking a connecting flight ticket?

ASSISTANT: Sure. May I know your origin?

USER: My origin is TX - IAH.

ASSISTANT: Can you share me your travelling dates?

USER: My travelling dates are from 11/19 to 11/21.

ASSISTANT: Thanks for your details. Please wait a minute.

USER: OK.

ASSISTANT: Thanks for waiting. There are no flights found on your data.

USER: No problem, thank you for the information.

ASSISTANT: Thank you.