You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Kevin Adams here and I would like to go Dallas to meet my grand parents over there, so can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure, I can help you with that.

USER: Thank you.

ASSISTANT: Can you please mention your travel dates for booking flight ticket?

USER: I am planning to move on 08/01 and please book a return ticket on 08/03.

ASSISTANT: May I know your preferable airport code names?

USER: Sure, I want to travel from LAX to DFW.

ASSISTANT: Ok, please wait a moment, I will check flight availability.

USER: Sure.

ASSISTANT: Sorry, there is no flights available as per your requested dates.

USER: Oh! So sad to hear. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us, have a good day.

USER: Welcome.