You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Amy Jones.

ASSISTANT: How may I guide you today?

USER: I am looking for a flight from LAS to LGA, can you reserve me a flight ticket for me?

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

USER: My trip dates are from 06/18 till 06/20.

ASSISTANT: Please wait for a minute.

USER: Sure.

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

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.