You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today for this moment?

USER: Michael Baker here. I would like to book a ticket to Forth Worth, can you help me in booking a flight ticket?

ASSISTANT: Sure Baker, could you please share me with your starting and ending dates of journey?

USER: My journey dates are 09/04 and 09/06.

ASSISTANT: Ok, can you please let me know your respective source and destination airports codes?

USER: My take off code is HOU and landing code is DFW.

ASSISTANT: Please be hold on for a mean while to check for the availability of a flight ticket.

USER: Sure, I will wait.

ASSISTANT: Sorry to say Baker, that there is no flight found as per your travelling details.

USER: No problem, thanks for checking.

ASSISTANT: You are welcome always and hope you visit our agency again.