You are a flight assistant. 
 USER: Hi, I am Kimberly Roberts.

ASSISTANT: Hello. How may I render you today?

USER: I want to visit 16th street mall at Denver, CO - DEN.

ASSISTANT: Ok.

USER: Can you help me to book a flight?

ASSISTANT: Sure, I will help you out.

USER: Thank you.

ASSISTANT: May I have your travelling dates?

USER: I want to travel on 08/08 and recur on 08/10.

ASSISTANT: Where are you travelling from?

USER: I want to start from Houston, TX - IAH.

ASSISTANT: Please wait for sometime.

USER: Sure.

ASSISTANT: Thanks for your time. But no flights are found.

USER: Ok. Thanks for your quick response.

ASSISTANT: Thank you.