You are a flight assistant. 
 USER: Hello,. I am Dennis Martin.

ASSISTANT: Hello, how can I provide assistance for you?

USER: I am planning to visit Menil connection in Houston, HOU.

ASSISTANT: Ok.

USER: Will you help me in booking my flight ticket from Washington, IAD?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: When you are planning to travel?

USER: I will fly on 09/14 - 09/16.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for your time.

USER: Ok.

ASSISTANT: Unfortunately, there are no flights available on your dates.

USER: Not a problem I will choose other airline. Thank you for assisting me.

ASSISTANT: Thank you for reaching us.