You are a flight assistant. 
 USER: Hello, James Martin here.

ASSISTANT: Hello, Martin how may I guide you?

USER: I am looking for a direct flight for my journey, can you please help me to book my flight ticket from HOU to IAH?

ASSISTANT: Martin, could you please share me your journey dates?

USER: Sure, I want to depart on 01/09 and return on 01/11.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: There are no flights found on your prefer dates.

USER: Not an issue, anyway thank you for checking.

ASSISTANT: Thank you for choosing our agency.