You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I am Melissa Carter, can you help me to book a flight from MSP to PHL?

ASSISTANT: Can you please share your preferable journey dates?

USER: My travelling dates are May 12 and 14.

ASSISTANT: Do you have any class preference?

USER: No, I want to return at evening.

ASSISTANT: Is there any connection limit?

USER: I need a connecting flight.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for reaching us.