You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Myself Joshua Anderson. Can you please help me in booking a flight ticket from IAH to HOU locations?

ASSISTANT: Sure, can you please tell me your travel dates?

USER: My travelling dates are from 05/27 and 05/29.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry Joshua, there are no flights available on your given dates.

USER: It's ok. Thank you for the information.

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