You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Myself Jacob Lewis. Since I am a beautician, I need to attend an event at Washington, can you please book me a ticket from HOU to DTW?

ASSISTANT: Can you please share on what dates you are willing to travel.

USER: My planning dates are from 12/24 till 12/26.

ASSISTANT: Sure, wait a minute I will check it out.

USER: Ok.

ASSISTANT: I am sorry to say that there is no flight found.

USER: That so sad.

ASSISTANT: Thank you for contacting us.

USER: Thank you for checking.

ASSISTANT: Have a nice day.