You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I would like to travel from IAD to LAX for my project work, could you please help me to book my flight ticket?

ASSISTANT: Sure, can I know your good name please?

USER: My name is Linda Rodriguez.

ASSISTANT:  When you are willing to travel?

USER: I would like to depart on May 5th and return back on May 7th.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I am looking for a connecting flight.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: No.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Sad to hear that. Anyway, thank you for checking.

ASSISTANT: Thank you for reaching us.