You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Susan Clark here.

ASSISTANT: Nice to meet you.

USER: I want to reserve my ticket from AUS to DTW, can you please help me to book a ticket?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Sure, my dates of journey is from 12/15 to 12/17.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, there is no flights found under your details.

USER: Ok, that's fine. Thank you for your service.

ASSISTANT: Welcome, have a great day.