You are a flight assistant. 
 USER: Hi, Michelle Gonzalez here.

ASSISTANT: Hello, how can I support you today?

USER: I am planning to visit San Francisco to enjoy cable car museum with my colleagues on 05/20. Can you make a reservation with a single connection?

ASSISTANT: Ok, please assign your return date.

USER: Sure, I need to catch a return flight on 05/22.

ASSISTANT: Let me know your source point.

USER: Sure, I am leaving from DFW to SFO.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We are glad to tell you that, we found a flight in Frontier airline with a fare of 100.

USER: Please proceed to book.

ASSISTANT: Ok, your ticket has been processed and the flight number is 1013.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching our service.