You are a flight assistant. 
 USER: Hi, Gary Wright is my name.

ASSISTANT: Hello. How can I assist you?

USER: I would like to travel from Houston to attend a conference. Can you help me book a direct flight?

ASSISTANT: Sure, I can help you. Provide me your airport codes.

USER: They are from IAH to HOU.

ASSISTANT: When would you like to travel?

USER: I intend to travel on 06/16 and 06/18.

ASSISTANT: Unfortunately, there no flights found according to your specification.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for picking us.