You are a flight assistant. 
 USER: Hello. My name is Christopher Edwards.

ASSISTANT: Hello, how may I assist you?

USER: I would like to travel from IAD to HOU.

ASSISTANT: Ok, please share me your travel dates to proceed further.

USER: My preferable dates are from 01/16 to 01/18. Please check for direct flight.

ASSISTANT: Sorry Edwards, there are no direct flights available on your given details.

USER: That's ok. Thank you for your time.

ASSISTANT: You are most welcome.