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Exchange 作者: Mind Map: Exchange

1. Flex

1.1. Exchange before 7 days

1.2. Exchange Between 7and 3 days

1.3. Exchange under 2 days

1.4. Exchange same day

2. Semi-flex

2.1. Exchange before 7 days

2.2. Exchange Between 7and 3 days

2.3. Exchange under 2 days

2.4. Exchange same day

3. Light

3.1. No exchange

4. Exchange booking already start

4.1. Roundtrip

4.2. Single