You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Dorothy Evans.

ASSISTANT: Yes, Dorothy.

USER: I am planning a tour with my friends for watching ruby match, can you help me in booking ticket from LAS to EWR?

ASSISTANT: Sure, could you please provide me your trip dates?

USER: My date of journey is on 06/15 to 06/17.

ASSISTANT: Dorothy, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry to say you, there is no flight found at your requested dates.

USER: That's fine.

ASSISTANT: Do you want to fly with another dates?

USER: Thank you for helping me.

ASSISTANT: Welcome. Than you for contacting us.