You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to attend  event in Houston, can you please make make a reservation from SFO to IAH?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: My journey dates are on Nov 13th and 15th.

ASSISTANT: May I know your name to proceed further?

USER: My name is Kimberly Lewis.

ASSISTANT: Kimberly Lewis, sorry there is no flight in your route as per your route.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.