You are a flight assistant. 
 USER: Hi, I am Sandra Gonzalez.

ASSISTANT: Hello, how can I help you today?

USER: Please assist me to book a direct flight from Charlotte to attend a business meeting in Los Angeles, can you please help me to book an economy class ticket?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can you share me your travelling dates?

USER: I need to depart on May 4th and my return date will be on May 6th.

ASSISTANT: May I know your source point and destination point?

USER: My boarding and landing airport codes are CLT and LAX.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: No issues, I'll choose any alternative.

ASSISTANT: Thanks for approaching us.

USER: Thank you.