You are a flight assistant. 
 USER: Hello. I am Sharon Johnson.

ASSISTANT: Hello, how may I succor you?

USER: Can you please help me in flight ticket booking from SFO to LAS to attend a client meeting?

ASSISTANT: sure, may I know when do you want to travel?

USER: Thank you and my travelling dates are 09/19 and back on 09/21.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for sharing your essentials. There are no flights available on your route.

USER: Ok, no issue with that. Thank you for your help.

ASSISTANT: Thank you for opting us.

USER: Welcome.