You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nancy Jones.

ASSISTANT: How may I guide you Nancy?

USER: Can you please help me in booking my flight ticket from DEN to HOU?

ASSISTANT: Ok, when are you planning your journey?

USER: My travelling dates are 10/06 and 10/08.

ASSISTANT: Nancy, there are no flights available at this moment.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for contacting us.