You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Karen Martinez.

ASSISTANT: How can I assist you at this moment?

USER: Can you help me searching flights on these routes IAH to HOU?

ASSISTANT: Sure, can you please provide your travelling dates to proceed further?

USER: My travelling dates are 06/11 and 06/13.

ASSISTANT: Wait a moment please.

USER: Sure, I will wait for your response.

ASSISTANT: Karen Martinez, there are no flight services available on your requested dates.

USER: Oh! It's sad to hear, anyway I will go through with another airlines.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.