You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Matthew Carter.

ASSISTANT: Carter, how can I assist you?

USER: I heard that your service is best for reservation in advance I too need a flight ticket, could you mind help me in booking?

ASSISTANT: Sure, I will help you.

USER: Definitely, I would like to fly on 02/08 and 02/10.

ASSISTANT: Ok, could you please provide me your preferred airport codes?

USER: Sure, my location airport codes are OAK and IAH.

ASSISTANT: Ok, please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry Carter, I did not find any flight available on your preferred dates.

USER: That's ok, thank you for the information.

ASSISTANT: You are most welcome and thank you very much for choosing us.