You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Please help me to book a flight ticket from IAH to DEN.

ASSISTANT: Sure, I will help you. Can you please share me your travelling dates?

USER: My journey dates are from Oct, 07 to Oct, 09.

ASSISTANT: Ok, please share me your name.

USER: Deborah Thomas.

ASSISTANT: Ok, do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Sorry, no flights are available on your route.

USER: Thank you for your information.

ASSISTANT: Welcome, have a nice day.