You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Alexander Lewis.

ASSISTANT: I am here to assist you, let me know your concern?

USER: I am planning to visit Disneyland at Los Angeles, could you please help me with booking a flight ticket?

ASSISTANT: Ok, please may I know your travel dates?

USER: I would like to take off on 01/05 and return on 01/07.

ASSISTANT: Let me know your required journey airport codes, If possible?

USER: My source airport code is DFW and destination airport code is LAX.

ASSISTANT: Sorry, there is no flights available.

USER: That's ok, not an issue.

ASSISTANT: Thank you for connecting with our agency.

USER: Anyways, thank you for the information.