You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,.

USER: I am Benjamin Baker.

ASSISTANT: How may I help you?

USER: I need to attend a food festival in Charlotte, CLT. Will you help me in booking me a flight ticket from Seattle, SEA?

ASSISTANT: Please mention your travel dates?

USER: Sure, my dates of travel are 07/29 - 07/31.

ASSISTANT: Please provide price limit?

USER: Fare of my ticket is 500.

ASSISTANT: No flight found. Thanks.

USER: Ok, I will choose other airline. Thank you.