You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I am Deborah Perez. I would like to travel from HOU,  can you please book a ticket to DEN.

ASSISTANT: Sure, I am here to help you out. Please provide me your travel dates to check the best flight.

USER: Sure,my travelling dates are 06/30 till 07/02.

ASSISTANT: Sorry Perez, there is no flight in your route with your dates.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.