You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Elizabeth Walker here, I want to visit St.Paul, can you please help me to reserve my ticket from PHL to MSP?

ASSISTANT: I am happy to help you with that, can you please provide your preferable journey dates?

USER: Sure, my planned dates of travel is from 01/26 to 01/28.

ASSISTANT: PLease give me a minute.

USER: Sure.

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

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for contacting us, have a great day.