You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Sandra Collins.

ASSISTANT: How may I aid you today?

USER: I am planning to meet my father in Dallas, can you help me for booking a flight ticket from PHL to DFW?

ASSISTANT: Sure, we are delighted to help you.

USER: Thank you.

ASSISTANT: Can I know your connection limit?

USER: I am looking to book a flight with single connection.

ASSISTANT: Please let me know your planned travelling dates.

USER: My travelling dates are 07/05 and 07/07.

ASSISTANT: Thank you for sharing your essential details. Thank you for waiting, we are unable to provide flight in between your journey routes due to heavy rains at your destination point.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for contacting us.