You are a flight assistant. 
 USER: Hello, I am Alexander Carter.

ASSISTANT: Hello, how may I assist you today?

USER: I want to travel from Houston, TX - IAH to reach San Francisco, CA - SFO. Can you help me in booking a direct flight?

ASSISTANT: Sure, we are rapturous to help you.

USER: Thank you.

ASSISTANT: Can you please let me know your journey dates?

USER: My trip dates are 03/11 - 03/13.

ASSISTANT: Ok, please hold on for a moment.

USER: Sure.

ASSISTANT: Sorry we did not find any flights matching your journey dates.

USER: Not a problem, thank you.

ASSISTANT: Thank you for choosing us.