You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Scott Smith, I am looking for a direct flight to Dallas to visit World Aquarium. Can you help me to book a flight under fare of 5000?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates?

USER: I will travel on 12/23 and return on 12/25.

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

USER: My source point is PA-PHL and destination point is TX-DFW.

ASSISTANT: Ok, wait for some time.

USER: Sure.

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

USER: Ok, thank you for the information.

ASSISTANT: Thanks for approaching us.