You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Shirley Garcia, can you help me to book a direct flight?

ASSISTANT: Ok, let me know your travel dates to get a flgiht.

USER: My travelling dates are 01/31 and 02/02.

ASSISTANT: Ok, may I know your airport codes?

USER: I would like to travel from SFO to LAS.

ASSISTANT: Sorry Shirley Garcia, there is no direct flight on your route.

USER: Ok, no issues. Thank you.

ASSISTANT: Thanks for choosing us, have a good day.