You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of assistance are you looking for?

USER: Can you please book a flight ticket with direct flight to attend a meeting in Houston?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: My source and destination airport codes are, JFK to HOU.

ASSISTANT: Can I know your travel dates, please?

USER: My journey dates are on Mar 13th and 15th.

ASSISTANT: Do you have any requirements to be met?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Matthew Perez.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found with your requirements.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us.