You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I abet you today?

USER: My name is Stephanie Adams. I have a plan to meet my friend in Dallas, can you help me for booking?

ASSISTANT: Sure, can you please share your travelling dates?

USER: My travelling dates are from 11/27 till 11/29.

ASSISTANT: Ok, may I know your airport codes?

USER: My travelling airport codes are from DEN to DFW.

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

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.