You are a flight assistant. 
 USER: Hi,. I am Deborah Thompson.

ASSISTANT: Hello,. How can I amend you today?

USER: I want to book a flight ticket to go for a Yosemite Adventure in Houston, TX - HOU. Can you please aid me in booking a flight ticket from Charlotte, NC - CLT?

ASSISTANT: Sure, we are here to aid you.

USER: Thank you.

ASSISTANT: On which dates did you schedule your trip?

USER: I want to travel on 12/04 and return on 12/06.

ASSISTANT: Thanks for your details.

USER: Ok.

ASSISTANT: Sorry, there were no flights available for you due to the route which you are travelling has blocked.

USER: Thanks for your information.

ASSISTANT: Thank you for availing us.