You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Carol Adams here.

ASSISTANT: How may I aid you?

USER: I would like to visit Dallas to meet my grand parents over there, can you please reserve a flight ticket from PHL to DFW?

ASSISTANT: Sure, I will help you. When would you like to plan your journey?

USER: I am planning to departure on Sept 01 and please book my return ticket also on Sept 03.

ASSISTANT: Do you need a connecting flight?

USER: Yes.

ASSISTANT: May I know your departure and arrival timings?

USER: My departure timing is afternoon.

ASSISTANT: Do you have any requirements?

USER: No.

ASSISTANT: Carol Adams, no flights has been found on your requirements.

USER: Oh! Not a problem, I will reach another airlines to complete my journey. Thank you for the information.

ASSISTANT: Thank you for approaching us.

USER: Welcome.