You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My name is Gary Edwards. I am planning to travel from IAH to DEN, could you please help me with that?

ASSISTANT: Sure Edwards, please provide your travelling dates.

USER: My departure date is 01/08 and return date is 01/10.

ASSISTANT: Ok Edwards, please hold on for a moment I will check the availability.

USER: Sure.

ASSISTANT: Thank your for your patience Edwards, sorry there is no flight found on your requested travel dates.

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

ASSISTANT: Thank you for contacting us, have a wonderful day.