You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Nicholas Martinez. I am planning to travel form IAH to DFW, can you help in booking a flight for me?

ASSISTANT: Ok, may I know your travel dates?

USER: My travelling dates are 02/22 to 02/24.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there are no flights available at your location.

USER: That's ok.

ASSISTANT: Thank you for connecting with our agency.

USER: Thank you for your help.