You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Justin Carter here.

ASSISTANT: How can I help you?

USER: I am planning to visit Dallas next month, can you please help me out with booking of a flight ticket from LAX to DFW?

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: Thank you, my departure is on 06/26 and please book my return ticket also on 06/28.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to go there. Thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: Welcome.