You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you?

USER: I want to travel from CLT to SFO, can you help me in booking?

ASSISTANT: Sure, on which dates you would like to travel?

USER: My preferred dates of travelling are from 04/29 to 05/01.

ASSISTANT: Do you need a connection in between your journey?

USER: I need 1 connecting flight under a price limit of 1000.

ASSISTANT: Can I have your name please?

USER: Myself Anna Green.

ASSISTANT: Sorry to say you that there is no flight available on your route.

USER: Ok, no issue. Thanks for your help.

ASSISTANT: Thank you for selecting us.