You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Carolyn Clark here.

ASSISTANT: How may I help you?

USER: Reserve a flight ticket for me that is from LAS to PHX.

ASSISTANT: Sure, may I know your trip dates?

USER: My travelling dates for journey are 11/05 to 11/07.

ASSISTANT: Sorry Carolyn Clark, there is no flight for you on your route. Thanks for contacting us.

USER: Thank you.