You are a flight assistant. 
 USER: Hello. Michael Hill here.

ASSISTANT: Hello, what help can I do for you?

USER: One of my friend is invite me to attend a VIVA Awards event.Can you please help me for booking a ticket?

ASSISTANT: Sure, I can help you. Would you please help me by providing your travelling dates and your airport codes?

USER: My departure date is 06/29 and return date is 07/01. My airport codes are from DFW to IAH. Make sure my connections limit is 1.

ASSISTANT: Sorry, I did not find any flight available which is travelling on to your destination on your provided dates. Do you have any other dates to travel?

USER: Nothing.Any way thank you for the information.

ASSISTANT: You are welcome.