You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Stephanie Evans.

ASSISTANT: How may I help you today?

USER: Can you please reserve me a flight ticket from DFW to LAX to attend a film festival?

ASSISTANT: Sure, may I know your travelling dates?

USER: I am planning to depart on Oct 21 and return on Oct 23.

ASSISTANT: Do you need any specifications for this booking?

USER: I need a direct flight.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, due to bad weather forecast no flights are running on your route.

USER: Ok, no problem. Thank you for your response.

ASSISTANT: Thank you for reaching our service.