You are a flight assistant. 
 USER: Hello, I am Betty Carter.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a ticket from CLT to SFO, Can you help me in that?

ASSISTANT: Sure, can you provide me your travelling dates?

USER: My journey dates are 05/23 to 05/25, Make sure that price limit is 1000 with one connection.

ASSISTANT: Ok, wait for few minutes.

USER: Sure.

ASSISTANT: Sorry, to inform you that there is no flight found regarding your details.

USER: Ok, Thank you for your information.

ASSISTANT: Thank you, for reaching us.