You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Matthew Walker, can you help me to book a flight ticket from CLT to DFW?

ASSISTANT: Sure, I am happy to help you in the ticket booking. Can you please share your travel dates?

USER: Ok, my travel dates are 05/23 and 05/25.

ASSISTANT: Ok, please hold on for a while.

USER: Ok, I will wait.

ASSISTANT: Sorry to inform you that, I have not found any flight availability in this route on the dates you have given.

USER: That's ok, not a problem. Thank you for the information.

ASSISTANT: You are welcome. Thank you for choosing our travel agency.