You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please assist me with direct flight ticket booking from IAH to DFW to attend a meeting?

ASSISTANT: Sure, when would you like to travel?

USER: Thank you and I have planned my journey dates on Nov 22 and I will arrive back on Nov 24.

ASSISTANT: Do you have any preferences?

USER: There are no other preferences.

ASSISTANT: May I know your name please?

USER: My name is Kenneth Jones.

ASSISTANT: Thank you for your details, we did not find any flights running in your desired routes.

USER: No problem with that one, I can prefer any other source. Thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: Welcome.