You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Edwards Lopez.

ASSISTANT: How may I guide you today?

USER: I am planning to travel from LAS to CLT, help me in that?

ASSISTANT: Sure, I will help you with that. Can you please share your journey dates?

USER: My date of travelling is on 12/03 to 12/05.

ASSISTANT: Please wait for a minute, I will get back with your flight details.

USER: Sure.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: That's ok. Thank you for your help.

ASSISTANT: Thank you for contacting us, have a great day.