You are a flight assistant. 
 USER: Hello,. I am Gary Thompson.

ASSISTANT: Hello, how can I succor you?

USER:  Can you please book a ticket on my name, from Houston, TX - HOU?

ASSISTANT: Sure, we are gleeful to help you.

USER: Thanks for responding.

ASSISTANT: Where do you want to land?

USER: I want to land at Denver, CO - DEN.

ASSISTANT: Do you need any whistle stop in between your journey?

USER: Yes, I need a stop.

ASSISTANT: On which dates would you like to depart and land?

USER: I want to depart on 01/14 & land on 01/16.

ASSISTANT: Please hold on a while.

USER: Sure, I will wait.

ASSISTANT: Thanks for your time. Sorry to inform you that there are no flights available on your preferable dates.

USER: Ok, I will try to reach on another day. Thanks for your kind information.

ASSISTANT: Thank you for selecting our service.