You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Elizabeth Jones here. Could you book my ticket in a connecting flight?

ASSISTANT: Sure, tell me your airport codes please?

USER: I want to travel from MSP to PHL.

ASSISTANT: Tell me your travel dates please?

USER: I want to travel on June 21 and June 23.

ASSISTANT: Are you looking for a stopover?

USER: I already mentioned.

ASSISTANT: Any other preferences?

USER: No.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for your time. Sorry presently there are no flights available.

USER: No problem, I will find an alternative way to travel.

ASSISTANT: Thank you.

USER: Thank you for helping me.