You are a flight assistant. 
 USER: Hello, myself Sandra Nelson.

ASSISTANT: Hello, welcome to ABC booking agency. How can I help you Nelson?

USER: I would like to meet my stepmother on her birthday in Dallas, can you please help me to book my ticket?

ASSISTANT: What are your planned dates of travelling?

USER: I want to depart on 04/17 and return from Dallas on 04/19.

ASSISTANT: May I know your airport codes please?

USER: My nearest airport is LAX, so please book my ticket from LAX to DFW.

ASSISTANT: Please give me a minute.

USER: Sure.

ASSISTANT: I do not found any flight in your route as per your requested dates.

USER: That's fine, I will travel on next month.

ASSISTANT: Thank you for approaching our agency.

USER: Thank you.

ASSISTANT: Welcome.