You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Ronald Martinez here. I want to meet my ex-wife, so please book my ticket from MSP to JFK.

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My itinerary dates are Jan 29 and Jan 31.

ASSISTANT: Do you have any other specifications?

USER: I want to return in the evening.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.