You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Joseph Adams here.

ASSISTANT: How may I help you today?

USER: Find a flight ticket for me that is from DTW to HOU.

ASSISTANT: Sure, I am happy to help you.

USER: Ok.

ASSISTANT: Can I know your travelling dates?

USER: My travel dates for journey would be from 11/15 to 11/17.

ASSISTANT: Ok Adams, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry for the inconvenience, there are no flight's available based on your travelling dates.

USER: That's not a problem. Thank you.

ASSISTANT: Thank you for approaching us.Have a great journey.